herd in WordNet English dictionary

1. cause to herd, drive, or crowd together
   "We herded the children into a spare classroom"
   herd  crowd 
   
2. move together, like a herd
   herd 
   
3. keep, move, or drive animals
   "Who will be herding the cattle when the cowboy dies?"
   herd 
   

1. a group of cattle or sheep or other domestic mammals all of the same kind that are herded by humans
   herd 
   
2. a group of wild mammals of one species that remain together: antelope or elephants or seals or whales or zebra
   herd 
   
3. a crowd especially of ordinary or undistinguished persons or things
   "his brilliance raised him above the ruck"; "the children resembled a fairy herd"
   ruck  herd