Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
comb [kəum] n (for hair) расчёска; (:ornamental) гре́бень*m
vt (hair) расчёсывать (расчеса́ть*perf) (area) прочёсывать (прочеса́ть*perf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.