Slang term for "pants" in Polish? Gacie.

My mother's family, which came from Poland, used the word Zimnowy for long underwear. When we found out that that was not a common word for long underwear. I wondered if it was a colloquial term used in the area of Shenandoah Pennsylvania where my mother grew up. We figured now that it comes from the Polish word for winter or cold, ZImnow! Any comments?

Probably 'zimowy' which means winter (zima is winter) . 'Kurtka zimowa'will be winter coat. 'Opony zimowe'- winter tyres etc.