The Collaborative International Dictionary of English v.0.48:
Urticate \Ur"ti*cate\, v. t. & i. [imp. & p. p. Urticated; p. pr. & vb. n. Urticating.] To sting with, or as with, nettles; to irritate; to annoy. --G. A. Sala. [1913 Webster]WordNet (r) 3.0 (2006):
urticate v 1: whip with or as with nettles 2: sting with or as with nettles and cause a stinging pain or sensation [syn: nettle, urticate]