fallow

Short definition from Wiktionary

Noun

1. 1
   Ground ploughed and harrowed but left unseeded for one year.
2. 2
   Uncultivated land.
3. 3
   The ploughing or tilling of land, without sowing it for a season.

Adjective

1. 1
   Ploughed but left unseeded for more than one planting season.
2. 2
   Left unworked and uncropped for some amount of time.
3. 3
   Inactive; undeveloped.
4. 4
   Of a pale red or yellow, light brown; dun.

Verb

1. 1
   To make land fallow for agricultural purposes.