Noun

1. the region of the field roughly bounded by the wicket keeper, slips, gully, point, cover, mid off, mid on, midwicket and square leg
2. 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.

3. of an event, happening in the infield

   Jones ran out an infield single.

4. the area inside a racetrack or running track

   “Gasoline Alley” is in the infield at Indy.

5. a constrained scope or area

   Let’s keep this problem in the infield.