דופּע
די
'ass, arse'

ETYMOLOGY

Polish dupa 'ass, arse; vagina'; Ukrainian ду́па; Belarusian ду́па; Russian ду́па; from Proto-Slavic ✱dupa 'dupa'; from Proto-Balto-Slavic ✱daub/p-; cf. Lithuanian daubà 'ravine'; from PIE ✱dʰowp-eh₂, from the root ✱dʰewp- 'deep'.
Or borrowed from PGmc ✱deupaz; cf. English deep; Got diups (see טיף).