Etymology
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outfield (n.)

1630s, "outlying land of a farm" (especially in Scotland), from out- + field (n.); sporting sense is attested from 1851 in cricket, 1868 in baseball, "part of the field most remote from the batsman/batter." Related: Outfielder.

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center-field (n.)

also centerfield, 1857 in baseball, "the middle third of the outfield," from center (n.) + field (n.). Related: Center-fielder.

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