じゃがいもの皮をむく。
I peel the potatoes.
godan verb (-ku), transitive verb
bare (teeth/fangs); open wide (eyes)
Used in set phrases like 歯をむく (to bare one's teeth) or 目をむく (to open one's eyes wide, often in surprise or anger).
犬が歯をむいてうなった。
The dog bared its teeth and growled.
彼は驚いて目をむいた。
He opened his eyes wide in surprise.