| Pigeon-breasted (a.) Having a breast like a pigeon, -- the sternum being so prominent as to constitute a deformity; chicken-breasted. Thesaurus Entries bosomed, breasted, cetacean, chested, chordate, mammary, mammate, mammiform, mammillary, marsupial, nippled, papillary, papillose, papulous, pectoral, pigeon-breasted, teated, thoracic, vertebrate | ![]() |