蚕茧 cánjiǎn silkworm cocoon Origin Definitions Defs Strokes Stroke Words Sentences Sents 蚕 蠶 cán silkworm silkworm; any of various silkworm moth larvae that produce silk for textile use茧 繭 jiǎn noun cocoon The protective casing spun by a caterpillar or larva before it turns into a pupa; usually refers to a silkworm cocoon used for making silk.