Definition of "grouper"

grouper¹

/ˈɡɹuːpə(ɹ)/

noun
plural groupers or grouper
1. Any of various large food and game fishes of the subfamily Epinephelinae, especially the genera Epinephelus and Mycteroperca, which inhabit warm seas.

grouper²

/ˈɡɹuːpə(ɹ)/

noun
plural groupers
1. One who groups things.
2. (dated) A groupie.
  Quotations
  There was also a little roundfaced brunette named Marilyn who told me she used to be a teenie grouper hanging out with a rock'n'roll group called The Wild Flowers but now she was mainly with Bobby Petersen.
  1968, Tom Wolfe, The Electric Kool-Aid Acid Test, Bantam, published 1997, page 5