noun
pottery wheel throwing; shaping ceramics on a wheel
Refers to the act of shaping clay on a potter's wheel, or the spinning of the wheel itself. A standard term in pottery contexts.
彼女はろくろ回しがとても上手だ。
She is very skilled at throwing on the pottery wheel.
noun
hand gestures mimicking pottery wheel work
Slang, humorous. Describes gesticulating with both hands as if shaping clay on a wheel, often when someone is talking excitedly or trying to explain something.
彼は話しながらろくろ回しのような手振りをしていた。
He was making hand gestures like a pottery wheel thrower while talking.
ろくろ means 'potter's wheel' or 'lathe'; ろくろ回し specifically refers to the action of using it or the mimicking gesture.
Compound of ろくろ (potter's wheel) + 回し (turning, from 回す). The slang sense derives from the resemblance of hand movements to the action of shaping clay on a wheel.