1、One of the liplike divisions of a labiate corolla.
2、Any of numerous plants of the genus Lobelia, having terminal racemes of variously colored flowers with a bilabiate corolla.
3、The projecting part on the lower lip of a bilabiate corolla that closes the throat, as in a snapdragon.
4、One of the two divisions of bilabiate corolla or calyx, as in the snapdragon, or the modified upper petal of an orchid flower.
