Bai"ley (?), n. [The same word as bail line of palisades; cf. LL. ballium bailey, OF. bail, baille, a palisade, baillier to inclose, shut.]
The outer wall of a feudal castle.
The space immediately within the outer wall of a castle or fortress.
A prison or court of justice; -- used in certain proper names; as, the Old Bailey in London; the New Bailey in Manchester.
© Webster 1913.