restrict 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. place restrictions on
   "curtail drinking in school"
   restrict  curtail  curb  cut back 
   
3. make more specific
   "qualify these remarks"
   qualify  restrict 
   
4. place under restrictions; limit access to
   "This substance is controlled"
   restrict