the bringing together of a ranch's cattle for branding or to start a cattle drive.

Biologists surround and herd juvenile male fur seals close to the location where they haul out.

spring event in which cowboys gathered together the cattle herds, branded newborn calves, and castrated most of the new young males

the activity of gathering livestock together so that they can be counted or branded or sold

the systematic gathering up of suspects by the police; "a mass roundup of suspects"

The herding together of cattle for inspection, branding, or shipping.

The spring and fall gathering of cattle on the ranges in order to brand and ear-mark the calves, wean, sort for ownership and cut out those wanted for shipment to market.

Roundup is the brand name of a systemic, broad-spectrum herbicide produced by the U.S. life sciences giant Monsanto. It is the most used herbicide in the world, and the top-selling agrichemical of all time. Monsanto developed and patented the glyphosate molecule in the 1970s, and marketed Roundup from 1973.