Having the limb of a tubular corolla or calyx divided into two unequal parts, one projecting over the other like the lips of a mouth, as in the snapdragon, sage, and catnip.

Belonging to a natural order of plants (Labiatæ), of which the mint, sage, and catnip are examples. They are mostly aromatic herbs.

Provided with a lip-like organ.

To labialize.

A plant of the order Labiatæ.