pesPronunciation: /peɪz, piːz/Definition of pes noun (plural pedes /ˈpɛdeɪz, ˈpɛdiːz/) technical the human foot, or the corresponding terminal segment of the hindlimb of a vertebrate animal. Origin: mid 19th century: from Latin, 'foot'pes in other Oxford dictionaries Definition of pes in the US English dictionary