钻心虫 zuānxīnchóng borer insect Origin Definitions Defs Strokes Stroke Words Sentences Sents 钻心 鑽心 zuānxīn piercingly painful extremely painful or itchy, as if something is drilling into one's heart; unbearable虫 蟲 chóng noun insect lower form of animal life, including insects, larvae, worms, and similar creatures