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1 definition found
 for Carrier shell
From The Collaborative International Dictionary of English v.0.48 :

  Carrier \Car"ri*er\, n. [From Carry.]
     1. One who, or that which, carries or conveys; a messenger.
        [1913 Webster]
              The air which is but . . . a carrier of the sounds.
        [1913 Webster]
     2. One who is employed, or makes it his business, to carry
        goods for others for hire; a porter; a teamster.
        [1913 Webster]
              The roads are crowded with carriers, laden with rich
              manufactures.                         --Swift.
        [1913 Webster]
     3. (Mach.) That which drives or carries; as:
        (a) A piece which communicates to an object in a lathe the
            motion of the face plate; a lathe dog.
        (b) A spool holder or bobbin holder in a braiding machine.
            (c) A movable piece in magazine guns which transfers
            the cartridge to a position from which it can be
            thrust into the barrel.
            [1913 Webster]
     Carrier pigeon (Zool.), a variety of the domestic pigeon
        used to convey letters from a distant point to to its
     Carrier shell (Zool.), a univalve shell of the genus
        Phorus; -- so called because it fastens bits of stones
        and broken shells to its own shell, to such an extent as
        almost to conceal it.
     Common carrier (Law.) See under Common, a.
        [1913 Webster]

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