Definition of comb:
(n) :
a toothed implement for grooming the hair; a machine used in separating choice cotton fibers from worsted cloth fibers
"1882, But the comb or half quarter is very general in the Eastern counties, particularly in Norfolk. — James Edwin Thorold Rogers, A History of Agriculture and Prices in England, Volume 4, page 207."
(v) :
to groom the hair with a toothed implement; to separate choice cotton fibers from worsted cloth fibers