Of or pertaining to the genus Sylvia, or family Sylviidæ; being, related to, or resembling a member of the Sylviidæ; warbler-like. See warbler, Sylviidæ, Sylvicolidæ.n. One of the warblers; a member of the genus Sylvia or family Sylviidæ of the Old World, orn. of the family Mniotiltidæ of America. See these words, and warbler.Relating or named from the anatomist Jacques Dubois, Latinized Sylvius (1478–1555): specifically applied in anatomy to several parts.