A young Atlantic salmon on its first return from the sea to fresh or brackish waters.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "grilse" in a sentence
""Some of them are much larger than small salmon; but by the term grilse I mean young salmon that have only been once to sea."
"A grilse is a young salmon returning from the sea to fresh water for the first time - true or false?"
"Most of the salmon caught are known as grilse -- small, mostly male salmon that feed only a few hundred kilometres away from their home rivers."