godan verb (-su), transitive verb
Used specifically for footwear that becomes worn out from use. The verb combines 履く (to wear on feet) and 潰す (to crush/ruin).
毎日歩いていたら、お気に入りのスニーカーを履きつぶしてしまった。
I wore out my favorite sneakers from walking every day.
旅
I wore out my shoes during the trip and had to buy new ones.