It's pronounced klog and means to complain or grumble.
Here are some examples of how to use it in a sentence:
* ער קלאָגט שטענדיק (er klogt shteendik) - He always complains.
* זי קלאָגט אַז עס איז צו קאַלט (zi klogt az es iz tsu kalt) - She complains that it's too cold.
While "klog" is the most common word for "gripe" in Yiddish, there are other words that can also be used, such as קלאָגן (kloggen), פֿאַרלאַנגען (farlangen), or מומערן (mumern). However, "klog" is the most direct translation of "gripe" in Yiddish.