Trocar \Tro"car\, n. [F. trocart (or trois-quarts, i. e., three
quarters); trois three (L. tres) + carre the side of a sword
blade; -- so called from its triangular point.] (Surg.)
A stylet, usually with a triangular point, used for exploring
tissues or for inserting drainage tubes, as in dropsy.
[Written also {trochar}.]
[1913 Webster]