Contraction of waszmość pan.
waćpan m pers (female equivalent waćpani)
- (dated) you (polite term of address among the nobility)
- Synonyms: waść, acan, acpan, aćpan, asan, asindziej, aspan, pan, wacan, wasan, waspan, waszmość pan
- waćpan in Polish dictionaries at PWN