Collins Russian Dictionary 2nd Edition © HarperCollins Publishers 2000, 1997:
regale [rɪˈgeɪl] vt
to regale sb with sthразвлека́ть (развле́чь*perf) кого́-н чем-н
* is used to mark translations which have irregular inflections. The Russian-English side of the dictionary gives inflectional information.