noun, masculine/ʃɑ̃kʁ/plural: chancres
lobster, crab; canker, chancre
Inherited from Middle French chancre, from Old French chancre, inherited from Latin cancrum, from Proto-Italic *kankros, dissimilation of *karkros (“enclosure”) (because the pincers of a crab form a circle), from Proto-Indo-European *kr-kr- (“circular”), reduplication of *(s)ker- (“to turn, bend”). Doublet of cancer.