WordWeb Online

1. On the inside
   - inside

1. Internal to, not outside; located in the bounds of
   "within the house";
   - inside, in
    
2. Not more or further than, in the limits of
   "she's within sight"; "fixed within an hour"; "within a whisker of losing"
    
3. Internal to, involving members of (a group of people)
   "they argued within themselves";
   - among, amongst, between

Encyclopedia: Within