noun a plant of the order labiatae.
2. labiate ·vt to labialize.
3. labiate ·adj belonging to a natural order of plants (labiatae), of which the mint, sage, and catnip are examples. they are mostly aromatic herbs.
4. labiate ·adj 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.