fallowfal·low /ˈfæləʊ-loʊ/ adjectiveadj1FARMINGfallow land has been dug but is not being used for growing crops, giving the quality of the soil a chance to improvefallow land
a fallow field
2lie fallowFARMING if land lies fallow, it is not being used to grow cropsThe EU introduced incentives for farmers to let land lie fallow in order to reduce grain surpluses.
3COMMERCEa fallow period of time for a person or organization is one when they are not very active, productive, profitable etcThe pharmaceutical division emerged from a relatively fallow period, with increased profits this year.