ball up

动词

To crush or form into a ball shape. (transitive) · She balled up her paper in frustration.
To form melted metals into balls or lumps to roll them out of a furnace for further use. (transitive)
To coil up into a ball. · He balled up his fists, ready to fight.
To become ball-shaped. (intransitive) · Be careful, or the metal will ball up.
To hunch over and pull in one's arms and legs. (intransitive) · Her son balls up in fear whenever there is a storm.
To ruin or botch. (slang, transitive) · The best man balled up his speech, stammering and tripping over his words.
To smoke marijuana. (intransitive, slang) · Nah bro, I ain't tryna ball up tonight. I gotta focus on my studies.
To play basketball, especially playing well. (intransitive)

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