Tail of the trenches (gcide) | Tail \Tail\, n. [AS. taegel, taegl; akin to G. zagel, Icel.
    tagl, Sw. tagel, Goth. tagl hair. [root]59.]
    1. (Zool.) The terminal, and usually flexible, posterior
       appendage of an animal.
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    Note: The tail of mammals and reptiles contains a series of
          movable vertebrae, and is covered with flesh and hairs
          or scales like those of other parts of the body. The
          tail of existing birds consists of several more or less
          consolidated vertebrae which supports a fanlike group
          of quills to which the term tail is more particularly
          applied. The tail of fishes consists of the tapering
          hind portion of the body ending in a caudal fin. The
          term tail is sometimes applied to the entire abdomen of
          a crustacean or insect, and sometimes to the terminal
          piece or pygidium alone.
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    2. Any long, flexible terminal appendage; whatever resembles,
       in shape or position, the tail of an animal, as a catkin.
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             Doretus writes a great praise of the distilled
             waters of those tails that hang on willow trees.
                                                   --Harvey.
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    3. Hence, the back, last, lower, or inferior part of
       anything, -- as opposed to the head, or the superior
       part.
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             The Lord will make thee the head, and not the tail.
                                                   --Deut.
                                                   xxviii. 13.
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    4. A train or company of attendants; a retinue.
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             "Ah," said he, "if you saw but the chief with his
             tail on."                             --Sir W.
                                                   Scott.
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    5. The side of a coin opposite to that which bears the head,
       effigy, or date; the reverse; -- rarely used except in the
       expression "heads or tails," employed when a coin is
       thrown up for the purpose of deciding some point by its
       fall.
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    6. (Anat.) The distal tendon of a muscle.
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    7. (Bot.) A downy or feathery appendage to certain achenes.
       It is formed of the permanent elongated style.
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    8. (Surg.)
       (a) A portion of an incision, at its beginning or end,
           which does not go through the whole thickness of the
           skin, and is more painful than a complete incision; --
           called also tailing.
       (b) One of the strips at the end of a bandage formed by
           splitting the bandage one or more times.
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    9. (Naut.) A rope spliced to the strap of a block, by which
       it may be lashed to anything.
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    10. (Mus.) The part of a note which runs perpendicularly
        upward or downward from the head; the stem. --Moore
        (Encyc. of Music).
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    11. pl. Same as Tailing, 4.
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    12. (Arch.) The bottom or lower portion of a member or part,
        as a slate or tile.
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    13. pl. (Mining) See Tailing, n., 5.
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    14. (Astronomy) the long visible stream of gases, ions, or
        dust particles extending from the head of a comet in the
        direction opposite to the sun.
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    15. pl. (Rope Making) In some forms of rope-laying machine,
        pieces of rope attached to the iron bar passing through
        the grooven wooden top containing the strands, for
        wrapping around the rope to be laid.
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    16. pl. A tailed coat; a tail coat. [Colloq. or Dial.]
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    17. (Aeronautics) In airplanes, an airfoil or group of
        airfoils used at the rear to confer stability.
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    18. the buttocks. [slang or vulgar]
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    19. sexual intercourse, or a woman used for sexual
        intercourse; as, to get some tail; to find a piece of
        tail. See also tailing[3]. [slang and vulgar]
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    Tail beam. (Arch.) Same as Tailpiece.
 
    Tail coverts (Zool.), the feathers which cover the bases of
       the tail quills. They are sometimes much longer than the
       quills, and form elegant plumes. Those above the quills
       are called the upper tail coverts, and those below, the
       under tail coverts.
 
    Tail end, the latter end; the termination; as, the tail end
       of a contest. [Colloq.]
 
    Tail joist. (Arch.) Same as Tailpiece.
 
    Tail of a comet (Astron.), a luminous train extending from
       the nucleus or body, often to a great distance, and
       usually in a direction opposite to the sun.
 
    Tail of a gale (Naut.), the latter part of it, when the
       wind has greatly abated. --Totten.
 
    Tail of a lock (on a canal), the lower end, or entrance
       into the lower pond.
 
    Tail of the trenches (Fort.), the post where the besiegers
       begin to break ground, and cover themselves from the fire
       of the place, in advancing the lines of approach.
 
    Tail spindle, the spindle of the tailstock of a turning
       lathe; -- called also dead spindle.
 
    To turn tail, to run away; to flee.
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             Would she turn tail to the heron, and fly quite out
             another way; but all was to return in a higher
             pitch.                                --Sir P.
                                                   Sidney.
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