'Ringent' definitions:

Definition of 'Ringent'

From: GCIDE

Ringent \Rin"gent\, a. [L. ringens, -entis, p. pr. of ringi to open wide the mouth: cf. F. ringent.] (Bot.) Having the lips widely separated and gaping like an open mouth; as a ringent bilabiate corolla. [1913 Webster]