The Collaborative International Dictionary of English v.0.48:
azadirachtin \azadirachtin\ n. 1. a triterpenoid (C35H44O16) isolated from the seeds of the neem tree (Azadirachta indica), used as an insecticide. [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
azadirachtin n 1: insecticide