cotter drill

1 definition found

cotter drill - Collaborative International Dictionary of English v.0.48 :

  Drill \Drill\, n.
     1. An instrument with an edged or pointed end used for making
        holes in hard substances; strictly, a tool that cuts with
        its end, by revolving, as in drilling metals, or by a
        succession of blows, as in drilling stone; also, a drill
        press.
        [1913 Webster]
  
     2. (Mil.) The act or exercise of training soldiers in the
        military art, as in the manual of arms, in the execution
        of evolutions, and the like; hence, diligent and strict
        instruction and exercise in the rudiments and methods of
        any business; a kind or method of military exercises; as,
        infantry drill; battalion drill; artillery drill.
        [1913 Webster]
  
     3. Any exercise, physical or mental, enforced with regularity
        and by constant repetition; as, a severe drill in Latin
        grammar.
        [1913 Webster]
  
     4. (Zool.) A marine gastropod, of several species, which
        kills oysters and other bivalves by drilling holes through
        the shell. The most destructive kind is Urosalpinx  cinerea
        .
        [1913 Webster]
  
     Bow drill, Breast drill. See under Bow, Breast.
  
     Cotter drill, or Traverse drill, a machine tool for
        drilling slots.
  
     Diamond drill. See under Diamond.
  
     Drill jig. See under Jig.
  
     Drill pin, the pin in a lock which enters the hollow stem
        of the key.
  
     Drill sergeant (Mil.), a noncommissioned officer whose
        office it is to instruct soldiers as to their duties, and
        to train them to military exercises and evolutions.
  
     Vertical drill, a drill press.
        [1913 Webster]