מעשׂה

Etymology
From, with retention of an archaic velar nasal ayin in some pronunciations, assimilated to the following [s] sound. The more common plural form is borrowed from the plural of 🇨🇬.

Noun

 * 1) story, tale, narrative
 * 2) deed, action, act

Usage notes
As per Comprehensive Yiddish-English Dictionary by Solon Beinfeld and Harry Bochner, feminine is more "standard", but some masculine usages occur.