lingular,a.Anat.|ˈlɪŋgjʊlə(r)| [f.prec. + -ar.] Of or pertaining to a lingula. 1855Mayne Expos.Lex., Lingularis, of or belonging to a little tongue: lingular.1889Buck's Handbk.Med.Sci. VIII. 126 In the child at birth the lingular folia are rounded and distinct.