1. Plowed land. [Obs.]
Who . . . pricketh his blind horse over the fallows. --Chaucer.
2. Land that has lain a year or more untilled or unseeded; land plowed without being sowed for the season.
The plowing of fallows is a benefit to land. --Mortimer.
3. The plowing or tilling of land, without sowing it for a season; as, summer fallow, properly conducted, has ever been found a sure method of destroying weeds.
Be a complete summer fallow, land is rendered tender and mellow. The fallow gives it a better tilth than can be given by a fallow crop. --Sinclair.
Fallow crop, the crop taken from a green fallow. [Eng.]
Green fallow, fallow whereby land is rendered mellow and clean from weeds, by cultivating some green crop, as turnips, potatoes, etc. [Eng.]