Pronunciation: (ba-stēl'; Fr. bas-tē'yu),[key] —n., —pl.bas•tillesPronunciation: (ba-stēlz'; Fr. bas-tē'yu).[key] 1. (cap.) a fortress in Paris, used as a prison, built in the 14th century and destroyed July 14, 1789.
2. any prison or jail, esp. one conducted in a tyrannical way.
3. a fortified tower, as of a castle; a small fortress; citadel. Also,bas•tilePronunciation: (ba-stēl').[key]