Definitions from Wiktionary (round up)

▸ verb:  (transitive, idiomatic) To collect or gather (something) together.
▸ verb:  To gather (livestock such as cattle, sheep, geese, etc.) together, such as by encircling them.
▸ verb:  (transitive, informal) To arrest or detain a group of people based on collective (rather than individualized) cause or suspicion, often as a form of targeted persecution.
▸ verb:  (transitive, arithmetic) To round (a number) to the smallest integer that is not less than it, or to some other greater value, especially a whole number of hundreds, thousands, etc.
▸ Also see round_up

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