cocoon

n. 茧

cockchafer, cockcrow, cocked, cocked hat, cocker, cockerel, cockily, cockiness, cockle, cockney, cockpit, cockscomb, cocksure, cocktail, cocky, coco, cocoa, coconut, coconut matting, coconut palm (also coco, coco-palm), cod, cod-liver oil, coda, coddle, code, codeine, codex, codger, codicil, codification, codify, codpiece, codswallop, coed, coeducation, coeducational, coefficient, coerce, coercion, coercive,