Search Result for "ride herd":
Wordnet 3.0

VERB (1)

1. driving animals such as horses and cattle while riding along with them;
- Example: "Joe was riding herd during the day"



WordNet (r) 3.0 (2006):

ride herd
    v 1: driving animals such as horses and cattle while riding
         along with them; "Joe was riding herd during the day"