Titi \Ti"ti\, n. [Orig. uncert.] 1. A tree of the southern United States ({Cliftonia monophylla}) having glossy leaves and racemes of fragrant white flowers succeeded by one-seeded drupes; -- called also {black titi}, {buckwheat tree}, and {ironwood}. 2. Any related tree of the genus {Cyrilla}, often disting. as {white titi}.