1. (noun) cultivated land that is not seeded for one or more growing seasons

• cultivated land
• farmland
• ploughland
• plowland
• tillage
• tilled land
• tilth

1. (adjective) left unplowed and unseeded during a growing season

• unbroken
• unploughed
• unplowed

2. (adjective) undeveloped but potentially useful

• undeveloped
• unexploited