"A rare congenital deformity in which the hands or feet are attached close to the trunk, the limbs being grossly underdeveloped or absent. This condition was a side effect of the drug thalidomide taken during early pregnancy", Late 19th century: modern Latin, from Greek phōkē 'seal' + melos 'limb'.[phocomelia etymology, phocomelia origin, 英语词源]