Nouns

(n)mule, scuffa slipper that has no fitting around the heel
(n)scuffthe act of scuffing (scraping or dragging the feet)

Verbs

(v)scuff, dragwalk without lifting the feet
(v)scuffget or become scuffed“These patent leather shoes scuffed”
(v)scuffmar by scuffing“scuffed shoes”
(v)scuffpoke at with the foot or toe