Noli-me-tangere

n.
  1. (Bot.) A name formerly applied to several varieties of ulcerous cutaneous diseases, but now restricted to Lupus exedens, an ulcerative affection of the nose.
    1. Any plant of a genus of herbs (Impatiens) having capsules which, if touched when ripe, discharge their seeds. -- See Impatiens.
    2. The squirting cucumber. See under Cucumber.