A session of exercise or practice to improve fitness, as for athletic competition.(noun)
A strenuous test of ability and endurance.(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 "workout" in a sentence
"I mean, the term workout, you should feel like you're working."
"Ok, I hate the term workout, but it seems to summarize the actual activity of flailing my arms and legs about wildly for 40 minutes and / or 'til my face turns purple."
"If you can send your, what they call workout package, if you can send that in one bundle so that they have everything that they need at one time, you're going to be more successful then you can send in your materials piecemeal over a period of time."