- The act of exerting, or putting into motion or action;
the active exercise of any power or faculty; an effort, esp. a
laborious or perceptible effort; as, an exertion of strength or power;
an exertion of the limbs or of the mind; it is an exertion for him to
move, to-day.
Meaning of 'exertion' (Princeton's WordNet)
1 . exertion
[ n]
Meaning (1): - use of physical or mental energy; hard work