Bastile /(bȧs*tēl" [or] bȧs"tē̇l; 277)/

Bas·tile

Bastile

n.
  1. A tower or an elevated work, used for the defense, or in the siege, of a fortified place. (Feud. Fort.)
    The high bastiles . . . which overtopped the walls.
  2. “The Bastille”, formerly a castle or fortress in Paris, used as a prison, especially for political offenders; hence, a rhetorical name for a prison.