WordWeb Online

1. Invade in great numbers
   - infest
    
2. Occupy in large numbers or live on a host
   - invade, infest
    
3. Flow or run over (a limit or brim)
   - overflow, well over, run over, brim over
    
4. Seize the position of and defeat
   "the Crusaders overran much of the Holy Land"
    
5. Run beyond or past
   "The plane overran the runway"

1. Too much production or more than expected
   - overproduction

Derived forms: overran, overrun, overrunning, overruns

Type of: defeat, get the better of, inhabit, invade, occupy, overcome, overshoot, production, run out, spill

Encyclopedia: Overrun