From Longman Dictionary of Contemporary Englishstablematesta‧ble‧mate /ˈsteɪbəlmeɪt/ noun [countable] → somebody’s/something’s stablemate
Examples from the Corpus
stablemate• The colonial administration's paper, Mambo Leo, had, like its stablemates, been turned over to private hands.• The Pontiac Grand Am and Oldsmobile Achieva are the Skylark's stablemates. 