Rapier \Ra"pi*er\, n. [F. rapi[`e]re, perhaps for raspi[`e]re, and ultimately of German origin, akin to E. rasp, v.]

A straight sword, with a narrow and finely pointed blade, used only for thrusting.

Rapier fish (Zo["o]l.), the swordfish. [Obs.]

--Grew.

Source: Webster's Revised Unabridged Dictionary (1913)