bu·pres·tid (byōō-prěs'tĭd) n. Any of various beetles of the family Buprestidae, which are destructive wood borers as larvae and often have a metallic red, green, or blue color.
[From New Latin Būprēstidae, family name, from Būprēstis, type genus, from Latin būprēstis, beetle harmful to cattle, from Greek bouprēstis : bous, ox; see gwou- in Indo-European roots + prēthein, to swell up.]