FALLOW

adj., n., & v. --adj. 1 a (of land) ploughed and harrowed but left unsown for a year. b uncultivated. 2 (of an idea etc.) potentially useful but not yet in use. 3 inactive. 4 (of a sow) not pregnant. --n. fallow or uncultivated land. --v.tr. break up (land) for sowing or to destroy weeds. øøfallowness n. [ME f. OE fealh (n.), fealgian (v.)]