A kind of drawbridge with a counterpoise swinging up and down, and usually a pit behind it, in which the counterpoise falls or rises as the bridge rises or falls. Bascule is the arrangement of the counterpoise in bascule bridges.
Related term(s): Drawbridge; Gatehouse; Moat; Portcullis; Castle
Category: Castles and Fortifications
Source information: Wilhelm, Thomas. A Military Dictionary and Gazetteer. Philadelphia: L.R. Hamersly & Co., 1881. 47.