noli-me-tangere

‖n. [ L., touch me not. ] 1. (Bot.) (a) Any plant of a genus of herbs (Impatiens) having capsules which, if touched when ripe, discharge their seeds. -- See Impatiens. (b) The squirting cucumber. See under Cucumber. [ 1913 Webster ]

2. (Med.) A name formerly applied to several varieties of ulcerous cutaneous diseases, but now restricted to Lupus exedens, an ulcerative affection of the nose. [ 1913 Webster ]