noun which may take the genitive case particle 'no', noun
unowned; unpossessed
Describes something that has no owner or is not possessed by anyone. Often used in legal or formal contexts.
Unowned land reverts to the state.
この島は無主の地とみなされた。
This island was regarded as unowned territory.
ownerless property; bona vacantia
three noes principle; principle of indolence, indifference, and irresponsibility
Compound of 無 (mu, 'without') and 主 (shu, 'owner' or 'master'). The reading is on'yomi.