Rapier

n. type of narrow-bladed sword used in the 18th century; type of double-edged sword used in the 16th and 17th centuries

adj. extremely sharp, very keen; that describes a statement or sense of humour which is extremely shrewd and amusing

A rapier is a relatively slender, sharply pointed sword, used mainly for thrusting attacks, in use in Europe in the  16th and 17th centuries.
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Noun
1. a straight sword with a narrow blade and two edges
(synonym) tuck
(hypernym) sword, blade, brand, steel

n. rapier, type of narrow-bladed sword used in the 18th century; type of double-edges sword used in the 16th and 17th centuries

n. rapier