Definition of "frizz"

frizz¹

/fɹɪz/

verb
third-person singular simple present frizzes, present participle frizzing, simple past and past participle frizzed
1. (intransitive) Of hair, to form into a mass of tight curls.
2. (transitive) To curl; to make frizzy.
  Quotations
  with her hair frized short up to her ears
  1660 December 2 (date written; Gregorian calendar), Samuel Pepys, Mynors Bright, transcriber, “November 22nd, 1660”, in Henry B[enjamin] Wheatley, editor, The Diary of Samuel Pepys […], volume I, London: George Bell & Sons […]; Cambridge: Deighton Bell & Co., published 1893
  In labour-saving homes, with care, / Their wives frizz out peroxide hair.
  1937, John Betjeman, Slough
  There was also hairdressing: hairdressing, too, really was hairdressing in those times — no running a comb through it and that was that. It was curled, frizzed, waved, put in curlers overnight, waved with hot tongs; […]
  1977, Agatha Christie, chapter 4, in An Autobiography, part II, London: Collins
3. To form into little burs, knobs, or tufts, as the nap of cloth.
4. To make (leather) soft and of even thickness by rubbing, as with pumice stone or a blunt instrument.
5. To fry, cook, or sear with a sizzling noise; to sizzle.

frizz²

/fɹɪz/

noun
countable and uncountable, plural frizzes
1. A mass of tightly curled or unruly hair.