round up
To collect a group of people or animals in one place, or to make a number a bit bigger so it's easier to use.
Meanings
To collect or gather a group of people or animals and bring them together.
"The teacher rounded up the students and led them back to the classroom."
To increase a number to the nearest whole number or a higher convenient figure.
"The bill was £9.60, so I rounded it up to £10 and kept it simple."
To arrest or detain a group of people, often by authorities.
"Police rounded up several suspects in connection with the robbery."
Has two very common senses: (1) collecting/gathering — often used for rounding up cattle, suspects, or volunteers; (2) numerical rounding — standard in everyday maths. The gathering sense can have negative connotations when used of people being detained by authorities.
Commonly used with
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