1. the gathering together of cattle or other livestock, typically by cowboys on horseback
2. a summary or collection of news, information, or events
3. the systematic gathering or arrest of a group of people, especially by police

Examples

• The cowboys prepared for the annual cattle roundups in the spring.
• Here are the sports roundups from this weekend’s games.
• The news program featured roundups of the day’s major events.
• Police conducted roundups of suspected gang members.
• The ranch hands worked together during the fall roundups.
• Weekly roundups help viewers catch up on important stories.
• Immigration officials organized roundups in several cities.