restrain in WordNet English dictionary

1. place limits on (extent or access)
   "restrict the use of this parking lot"; "limit the time you can spend with your friends"
   restrict  restrain  trammel  limit  bound  confine  throttle 
   
2. to close within bounds, limit or hold back from movement
   "This holds the local until the express passengers change trains"; "About a dozen animals were held inside the stockade"; "The illegal immigrants were held at a detention center"; "The terrorists held the journalists for ransom"
   restrain  confine  hold 
   
3. hold back
   restrain  encumber  cumber  constrain 
   
4. keep under control; keep in check
   "suppress a smile"; "Keep your temper"; "keep your cool"
   restrain  keep  keep back  hold back 
   
5. to compel or deter by or as if by threats
   intimidate  restrain