Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
thump [θʌmp] n (blow) уда́р; (sound) глухо́й стук
vt (person) сту́кнуть (perf)
vi (heart etc) стуча́ть (impf)
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.
Русский: