Sentence:  This gave the roundup the appearance of a cavalry charge, and a stranger observing the procedure for the first time might have thought we were a bunch of green, possibly drunken cowboys making sport out of <WSD>chousing</WSD> cattle. But we weren't <WSD>chousing</WSD> them, we were just trying to keep them in sight, and for a very good reason. 
Meaning of the word marked with <WSD> tags:  To handle, to take care of.