external organ

English Thesaurus

1. an organ that is situated on or near the surface of the body (noun.body)

hypernym	:	organ,
definition	:	a fully differentiated structural and functional unit in an animal that is specialized for some particular function (noun.body)

hyponym	:	external ear, outer ear,
definition	:	the part of the ear visible externally (noun.body)

hyponym	:	precordium,
definition	:	the external surface of the body overlying the heart and stomach (noun.body)