nettle -- (any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae))
Overview of verb nettle
The verb nettle has 2 senses
nettle, urticate -- (sting with or as with nettles and cause a stinging pain or sensation)
annoy, rag, get to, bother, get at, irritate, rile, nark, nettle, gravel, vex, chafe, devil -- (cause annoyance in; disturb, especially by minor irritations; "Mosquitoes buzzing in my ear really bothers me"; "It irritates me that she never closes the door after she leaves")