Word for beading of old cloth

I am having trouble finding a word similar to threadbare or worn out that represents a worn garment that has started to form a bead-like texture from extensive usage. Any ideas if such a word exists?


Solution 1:

The process is called "pilling". The small balls of fabric are "pills".

Pill (intransitive verb)

to become rough with or mat into little balls 'brushed woolens often pill'