1. Pale red or pale yellow; as, a fallow deer or greyhound.


  1. Left untilled or unsowed after plowing; uncultivated; as, fallow ground.
  2. Plowed land.
  3. Land that has lain a year or more untilled or unseeded; land plowed without being sowed for the season.
  4. 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.
  5. To plow, harrow, and break up, as land, without seeding, for the purpose of destroying weeds and insects, and rendering it mellow; as, it is profitable to fallow cold, strong, clayey land.