in·field / ˈinˌfēld/ • n. the inner part of the field of play in various sports, in particular: ∎ Baseball the area within and near the four bases. ∎ Cricket the part of the field closer to the wicket. ∎ the players stationed in the infield, collectively. • adv. into or toward the inner part of the field of play. DERIVATIVES: in·field·er n. (in sense 1).