Trepan

5 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trepan \Tre*pan"\, n. [F. tr['e]pan (cf. Sp. tr['e]pano, It.
     trepano, trapano), LL. trepanum, fr. Gr. ? a borer, auger,
     trepan, fr. ? to bore, ? a hole. Cf. {Trephine}.]
     1. (Surg.) A crown-saw or cylindrical saw for perforating the
        skull, turned, when used, like a bit or gimlet. See
        {Trephine}.


        [1913 Webster]
  
     2. (Mining) A kind of broad chisel for sinking shafts.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trepan \Tre*pan"\, v. t. & i. [imp. & p. p. {Trepanned}; p. pr.
     & vb. n. {Trepanning}.] [Cf. F. tr['e]paner. See {Trepan} a
     saw.] (Surg.)
     To perforate (the skull) with a trepan, so as to remove a
     portion of the bone, and thus relieve the brain from pressure
     or irritation; to perform an operation with the trepan.
     [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trepan \Tre*pan"\, n. [See {Trapan}.]
     1. A snare; a trapan.
        [1913 Webster]
  
              Snares and trepans that common life lays in its way.
                                                    --South.
        [1913 Webster]
  
     2. a deceiver; a cheat.
        [1913 Webster]
  
              He had been from the beginning a spy and a trepan.
                                                    --Macaulay.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Trepan \Tre*pan"\, v. t.
     To insnare; to trap; to trapan.
     [1913 Webster]
  
           Guards even of a dozen men were silently trepanned from
           their stations.                          --De Quincey.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  trepan
       n 1: a surgical instrument used to remove sections of bone from
            the skull [syn: {trephine}]
       2: a drill for cutting circular holes around a center
       v : cut a hole with a trepan, as in surgery
       [also: {trepanning}, {trepanned}]