peppermint

Short definition from Wiktionary

Noun

1. 1
   A hybrid herb of the mint family (Mentha × piperita), formed by crossing watermint and spearmint, which has a high menthol content and a sharp flavor and is used in cooking, especially in herb teas and in confections.
2. 2
   Any of various eucalypts of southeastern Australia whose leaves yield peppermint-like essential oils.
3. 3
   Any of various sweets containing extract of the peppermint herb; peppermint confectionery.