The Collaborative International Dictionary of English v.0.48:
aminopyrine \aminopyrine\ n. 1. 1 a white crystalline substance used as an analgesic and antipyretic. Syn: amidopyrine [WordNet 1.5]WordNet (r) 3.0 (2006):
aminopyrine n 1: a white crystalline substance used as an analgesic and antipyretic [syn: aminopyrine, amidopyrine]