Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
chuckle [ˈtʃʌkl] vi посме́иваться (impf)
"Yes", he chuckled Да, - сказа́л он, посме́иваясь
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: