Noli-me-tangere \No"li-me-tan"ge*re\, 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.

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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Impatiens \Im*pa"ti*ens\, n. [L., impatient.]

(Bot.) A genus of plants, several species of which have very beautiful flowers; -- so called because the elastic capsules burst when touched, and scatter the seeds with considerable force. Called also touch-me-not, jewelweed, and snapweed. I. Balsamina (sometimes called lady's slipper) is the common garden balsam.

Source: Webster's Revised Unabridged Dictionary (1913)