\Group"er\, n. [Corrupted fr. Pg. garupa crupper. Cf.
{Garbupa}.] (Zo["o]l.)
(a) One of several species of valuable food fishes of the
    genus {Epinephelus}, of the family {Serranid[ae]}, as the
    red grouper, or brown snapper ({E. morio}), and the black
    grouper, or warsaw ({E. nigritus}), both from Florida and
    the Gulf of Mexico.
(b) The tripletail ({Lobotes}).
(c) In California, the name is often applied to the
    rockfishes. [Written also {groper}, {gruper}, and
    {trooper}.]