The cockroach is a harmful insect; it must be wiped out.
Tips
usage
Read fěi, 蜚 means a harmful insect and appears only in 蜚蠊 (the old word for cockroach). This reading is technical and rare; the everyday reading is fēi.
The insect radical at the bottom. The character originally named a flying pest, which is why a word now used for flying and spreading rumors still carries the bug radical.
