1. Land that has no owner; property that is not owned by any individual, corporation, or government entity
The explorers discovered vast tracts of unowned land in the remote wilderness.
Os exploradores descobriram vastas extensões de terra sem dono na selva remota.
2. Land in a state of legal limbo where ownership has not been established or claimed
After the war, much unowned land became available for settlement.
Após a guerra, muita terra sem dono tornou-se disponível para colonização.