
[French, from Old French, fortress, alteration of bastide, from Old Provençal bastida, from bastir, to build, of Germanic origin.]
1. A fortification or castle, frequently used as a prison.
2. A tower or bulwark in the fortifications of a town.
1. As bastion (1).
2. Fortified tower.
3. Small fortress.
4. Name of the C14 Parisian prison-fortress destroyed in 1789, so synonymous with a gaol.