What is the meaning of 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
• Cause annoyance in; disturb, especially by minor irritations.
  • usage: "Mosquitoes buzzing in my ear really bothers me"; "It irritates me that she never closes the door after she leaves"
  • synonyms: annoy, rag, get to, bother, get at, irritate, rile, nark, gravel, vex, chafe, devil