CESAREVITCH Meaning of CESAREVITCH in English n. (also cesarewitch) 1 hist. the eldest son of the emperor of Russia (cf. TSAREVICH). 2 (Cesarewitch) a horse-race run annually at Newmarket. [ Russ. tsesarevich ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012