a small primitive wingless insect, Thermobia domestica, that occurs in warm buildings, feeding on starchy food scraps, fabric, etc: order Thysanura (bristletails)
firebrat in American English
(faɪrˌbræt)
noun
any of various small thysanuran insects (Thermobia domestica) resembling silverfish, found in hot areas, as around steam pipes or fireplaces