Definition of "no use"

no use

noun
uncountable
1. pointless, useless; not worth doing, especially because it is not likely to succeed
2. (colloquial) No point or advantage.
  Quotations
  Well it ain't no use to sit and wonder why, babeIf e'en you don't know by nowAn' it ain't no use to sit and wonder why, babeIt don't ever do somehow.
  1962, Bob Dylan, Don't Think Twice, It's All Right