1.
When something wears out or when you wear it out, it is used so much that it becomes thin or weak and unable to be used any more.
Every time she consulted her watch, she wondered if the batteries were wearing out...
Horses used for long-distance riding tend to wear their shoes out more quickly...
He wore out his shoes wandering around Mexico City.
PHRASAL VERB: V P, V n P, V P n (not pron)
2.
If something wears you out, it makes you feel extremely tired. (INFORMAL)
The past few days had really worn him out...
The young people run around kicking a ball, wearing themselves out...
The effect of the continuous attacks has been to ~ his troops.
PHRASAL VERB: V n P, V pron-refl P, V P n (not pron)
3.
see also worn out