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1. (Science: botany) Any plant of a genus of herbs (impatiens) having capsules which, if touched when ripe, discharge their seeds. See Impatiens. The squirting cucumber. See Cucumber.

2. (Science: medicine) A name formerly applied to several varieties of ulcerous cutaneous diseases, but now restricted to lupus exedens, an ulcerative affection of the nose.

Origin: L, touch me not.