open-field

adjective

Definition of open-field

 (Entry 1 of 2)

1 : of, relating to, or constituting a system of agriculture widely practised in medieval Europe and based upon dividing the arable land into unenclosed strips usually subject to a 3-year rotation and upon distributing it among different cultivators
2 of a football player : notably capable of gaining yardage in a broken field an open-field runner

open field

noun

Definition of open field (Entry 2 of 2)

1 : broken field
2 : an unhampered chance given an open field to experiment