from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A prison; a jail.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A castle tower, or fortified building; a small citadel or fortress.
- n. A prison or jail.
French, from Old French, fortress, alteration of bastide, from Old Provençal bastida, from bastir, to build, of Germanic origin.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French bastille, from Late Latin bastilia, plural of bastile, from bastire ("to build"). (Wiktionary)