decapod (n.)youdaoicibaDictYouDict[decapod 词源字典]
1835 as a type of crustacean having 10 legs, from French décapode (1806), from Modern Latin Decapoda (animalia), from Greek dekapoda, neuter plural of dekapous "ten-footed" (see ten + foot (n.)). From 1888 as a type of locomotive.[decapod etymology, decapod origin, 英语词源]