verb · to revolve, rotate, or spin

大风吹过，枯黄的落叶在空中不停地旋。

verb, adverb · to turn around or return (often used in the idiom 凯旋 kǎi​xuán, meaning to return in triumph from a military victory)

老华侨离乡多年，终于在今日旋归故乡。

noun · happening right away or done as needed at the moment

这菜要旋做旋吃才新鲜。

noun · a loop, circle, or whorl

他头顶上有一个小旋。

noun, verb · to revolve, spin, or rotate rapidly, often using a tool like a lathe

旋床上的零件在飞快地旋。