The Collaborative International Dictionary of English v.0.48:
hemostat \hemostat\ n. a surgical instrument that stops bleeding by clamping the blood vessel. Syn: haemostat. [WordNet 1.5]WordNet (r) 3.0 (2006):
hemostat n 1: a surgical instrument that stops bleeding by clamping the blood vessel [syn: hemostat, haemostat]