boundary

noun6

1. •
   The dividing line or location between two areas.
2. •
   An edge or line marking an edge of the playing field.
3. •
   [in the plural] (figurative) The bounds, confines, or limits between immaterial things (such as one’s comfort zone, privacy, or professional sphere and the realm beyond).

   • I didn’t mean to push the boundaries by sending my boss a message on Saturday night.
4. •
   An event whereby the ball is struck and either touches or passes over a boundary (with or without bouncing), usually resulting in an award of 4 (four) or 6 (six) runs respectively for the batting team.

   • Travis hit a boundary to seal the match on the last ball of the over.
5. •
   (of a set) The set of points in the closure of a set S, not belonging to the interior of that set.
6. •
   (Philippines) Commission paid by a bus or jeepney driver to a public transportation operator for taking passengers, or the excess collected fares taken as daily wage.