This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A session of exercise or practice to improve fitness, as for athletic competition.

n. A strenuous test of ability and endurance.

n. An exercise session; a period of physical exercise.

n. A schedule or program of specific exercises, especially one intended to achieve a particular goal.

n. Any activity that requires much physical or mental effort, or produces strain.

n. the activity of exerting your muscles in various ways to keep fit

"I mean, the term workout, you should feel like you're working."

elbow grease    exertion    travail    effort    sweat   

work out   

tummy crunch    isometrics    leg exercise    pubococcygeus exercises    musclebuilding    set    back exercise    gymnastic exercise    arm exercise    stretching   

Fitness & Nutrition   

exercise    fitness    session    rehearsal    exam    drill    regimen    gym    schedule    swim