roundup

Short definition from Wiktionary

Noun

1. 1
   An activity in which cattle are herded together in order to be inspected, counted, branded or shipped.
2. 2
   The similar police activity of gathering together suspects.
3. 3
   The forcible gathering together of any particular group of people.
4. 4
   The summary to a news bulletin.
5. 5
   An upward curvature or convexity, as in the deck of a vessel.
6. 6
   The finishing of an arrangement.

Proper noun

1. 1
   A city, the county seat of Musselshell County, Montana, United States, which served as a place for cattle roundups.