Infields

noun

1. The area inside a racetrack or running track.
2. A constrained scope or area.

   "Let’s keep this problem in the infield."

3. An area to cultivate: a field
4. The region of the field roughly bounded by the home plate, first base, second base and third base.

   "They covered the infield with a tarp when it started to rain."

5. (as a modifier, functioning as an adjective) Of an event, happening in the infield.

   "Jones ran out an infield single."