(1):

(n.) A lozenge of sugar flavored with peppermint.

(2):

(n.) A volatile oil (oil of peppermint) distilled from the fresh herb; also, a well-known essence or spirit (essence of peppermint) obtained from it.

(3):

(n.) An aromatic and pungent plant of the genus Mentha (M. piperita), much used in medicine and confectionery.