Make bootees (4)
I believe the answer is:
knit
'make bootees' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for knit that I've seen before include "Make a sweater, maybe" , "Tighten (eyebrows) in a frown; unite" , "needlework?" , "Cause to unite" , "Make a woolly" .)