sensitive plant

noun2

1. •
   A plant that moves in response to touch and other physical stimuli; especially Mimosa pudica, an annual plant native to Central and South America.

   • The picture that was found on a bramble-bush, the new sensitive-plant, or tree, which caught the swain by the upper-garment, and presented to his ravished eyes a portrait. — 1788
2. •
   (no longer used) An organism thought to be intermediate between plants and animals; a zoophyte.