The Collaborative International Dictionary of English v.0.48:
Bristletail \Bris"tle*tail`\, n. (Zool.) An insect of the genera Lepisma, Campodea, etc., belonging to the Thysanura. [1913 Webster]WordNet (r) 3.0 (2006):
bristletail n 1: small wingless insect with a long bristlelike tail