Being obviously based on AK-47 it, as many other titles in Destiny, has Russian word in its title.
Zhalo means "sting" in Russian and "zh" should be pronounced differently. For example, as you would say Jacques or Jean in French.
You can listen how it's pronounced on Google translate:
https://translate.google.com/#en/ru/sting
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Who. Gives. A. Shit? All these posts make me wanna do is find you OPs on LFG, join your fireteam, and mispronounce EVERYTHING. "Hold on, guys. My Zaylow is out of bullets. I gotta reload my weapon thingy. Don't kill Ork without me. Shit, a witch is shooting me.. HELP!! Can I ride my speeder in here? Damnit! I forgot my RPG, all I have is my LMG, is that cool? Sorry, guys, gotta run. My mom just brought home pizz-zaah from Papa Jims."