what are the odds …
a quick google search says it comes from the turkish “uruspu”, which refers to the female of any species of canidae.
For those special times when “bitch” is too plebeian.

Pachavra is a dish rag. Pacha is a type of soup that congeals when cold. I reckon in this case though it’s just a contraction of “pachavra”, although it adds a degree of nastiness.