蛀虫

insect that eats into wood, books, clothes etc / fig. vermin

termite / to bore (of insects)

variant of 蟲|虫[chong2]

lower form of animal life, including insects, insect larvae, worms and similar creatures / CL:條|条[tiao2],隻|只[zhi1] / (fig.) person with a particular undesirable characteristic