Roundup

wiktionary

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From the verb phrase round up.

etymonline

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roundup (n.)

also round-up, by 1869 in the cattle drive sense; from verbal phrase round up "to collect in a mass" (1610s; specifically by 1847 of livestock in grazing areas, "drive or bring together in close order"); see round (v.) + up (adv.). The original notion is presumably "heap or fill so as to make round at the top." The meaning "summary of news items" is recorded from 1886.