grouper

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various often large serranid fishes of the subfamily Epinephelinae, found in tropical and subtropical waters worldwide and valued as food and game fish.

from The Century Dictionary.

• noun A serranoid fish of the genus Epinephelus or Mycteroperca.
• noun Any one of many different fishes in different countries.
• noun The black jew-fish, Garrupa nigrita.
• noun Mycteroperca bonaci.

from the GNU version of the Collaborative International Dictionary of English.

• noun One of several species of valuable food fishes of the genus Epinephelus, of the family Serranidæ, as the red grouper, or brown snapper (Epinephelus morio), and the black grouper, or warsaw (Epinephelus nigritus), both from Florida and the Gulf of Mexico.
• noun The tripletail (Lobotes).
• noun In California, the name is often applied to the rockfishes.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of various large food and game fishes of the subfamily Epiphelinae, especially the genera Epinephelus and Mycteroperca, which inhabit warm seas.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun usually solitary bottom sea basses of warm seas
• noun flesh of a saltwater fish similar to sea bass