Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
clamour [ˈklæmər] (US) clamor n (noise) гул; (protest) ро́пот
vi
to clamour for шу́мно тре́бовать (impf) +gen
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.