Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
rabbit [ˈræbɪt] n (male) кро́лик; (female) крольчи́ха
vi
to rabbit (on) (BRIT) (inf) треща́ть (impf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.