The definition of fallow is inactive.(adjective)
A piece of land that is normally used for farming but that is left with no crops on it for a season in order to let it recover its fertility is an example of land that would be described as fallow.
See fallow in Webster's New World College Dictionary
Origin: ME falow < OE fealh, akin to fealh, harrow, felly (of wheel) < IE base *pelk-, to turn > Gael olca, fallow land
Origin: ME falwen < OE fealgian < fealh, fallow land; infl. by fealwian, to fade < fealo: see fallow
Origin: ME falwe < OE fealo, akin to Ger fahl, fallow < Gmc *falwa < IE base *pel-, gray, pale > L pallidus
See fallow in American Heritage Dictionary 4
Origin: Middle English falow
Origin: , from Old English fealh, fallow land.
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