Atlantic salmon

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

• noun A salmon (Salmo salar) having silvery or yellowish sides with some black spots on the back, native to northern Atlantic waters and often cultivated in fish farms for food.

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

• noun A species of fish of the Salmonidae family, the Salmo salar.

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

• noun fatty pink flesh of fish from northern coastal Atlantic; usually marketed fresh
• noun found in northern coastal Atlantic waters or tributaries; adults do not die after spawning