What was the meaning of Frau brucha cloris leachman in blazing saddles?

Cloris Leachman didn't play he part of "Frau Brucha" in Blazing Saddles . She played that part in "Young Frankenstein". Most thought that "Brucha" was a German word for glue which always upset the horses whenever they heard someone say it, but it turned out not to be true, hense I'm at a loss for the real answer to that.