nettle

(noun) any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae).

(verb) sting with or as with nettles and cause a stinging pain or sensation. Synonyms: urticate.

(verb) cause annoyance in; disturb, especially by minor irritations. Synonyms: annoy, rag, get to, bother, get at, irritate, rile, nark, gravel, vex, chafe, devil. Examples: "Mosquitoes buzzing in my ear really bothers me." "It irritates me that she never closes the door after she leaves."