Source : Webster's Revised Unabridged Dictionary (1913)

Labiate \La"bi*ate\, n. (Bot.)
   A plant of the order {Labiat[ae]}.

Labiate \La"bi*ate\, v. t.
   To labialize. --Brewer.

Labiate \La"bi*ate\, a. [NL. labiatus, fr. L. labium lip.]
   (Bot.)
   (a) 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.
   (b) Belonging to a natural order of plants ({Labiat[ae]}), of
       which the mint, sage, and catnip are examples. They are
       mostly aromatic herbs.

Source : WordNet®

labiate
     adj : having lips or parts that resemble lips [syn: {liplike}]