estray /ə.stɹeɪ/noun 2verb 1forms 3 noun2 •An animal that has escaped from its owner; a wandering animal whose owner is unknown. An animal cannot be an estray when on the range where it was raised, and permitted by its owner to run. A lost animal whose owner is known to the party at hand is not an estray. •(no longer used) Stray.[...] All the day / Had been a dreary one at best, and dim / Was settling to its close, yet shot one grim / Red leer to see the plain catch its estray. — 1855 verb1 •(no longer used) To stray.With other Maids to fish upon the Shoar; Estrays apart, and leaves her Company — 1614 formsestrayed · estraying · estrays