Real Dictionary

comb
countable noun: A comb is a flat piece of plastic or metal with narrow pointed teeth along one side, which you use to tidy your hair.
verb: If you comb a place, you search everywhere in it in order to find someone or something.
verb: If you comb through information, you look at it very carefully in order to find something.
verb: When you comb your hair, you tidy it using a comb.

comb in American English 1
a thin strip of hard rubber, plastic, metal, etc. with teeth, passed through the hair to arrange or clean it, or set in the hair to hold it in place or as an ornament
to clean, straighten out, or arrange with a comb
intransitive verb: to roll over or break at the crest, as a wave
noun: a toothed strip of plastic, hard rubber, bone, wood, or metal, used for arranging the hair, untangling it, or holding it in place
transitive verb: to arrange or adorn (the hair) with a comb

comb in American English 2
coomb
noun

comb in American English 3
combination

comb in British English
noun: a toothed device of metal, plastic, wood, etc, used for disentangling or arranging hair

comb. in American English
abbreviation: combination