1 wear (someone) out or wear out (someone) : to make (someone) tired
All that work in the yard yesterday really wore me out.
She was worn out (=exhausted) from exercising.
2 wear out or wear (something) out or wear out (something) : to become thinner, weaker, or no longer useful because of use or to cause (something) to become thinner, weaker, or no longer useful because of use
The tires wore out after 60,000 miles.
You’ll wear out your shoes doing that.
— often used as (be) worn out
The tape is worn out.