Crosswall

Crosswall - Interior dividing wall; structural.
Crownwork - Freestanding bastioned fortification in front of main defenses.
Cupola - Hemispherical armored roof.

Crosswall - interior dividing wall; structural.
Crow-steps step-gabled end to a roof. Also called corbie steps.
Crownwork - Freestanding bastioned fortification in front of main defenses.
Cunette - trench in the bottom of a ditch.

See also: Hood-mould, Aperture, Bond, Battlement, Church