Mantlet

Mantlet - Detached fortification preventing direct access to a gateway; low outer wall.
Merlon - The high segment of the alternating high and low segments of a battlement.

Mantlet wall: The outer wall of a late medieval castle that was situated between the main curtain and the moat. (L. mantellum, cloak).
Manzil: A fortified hostel on the Iberian peninsula.

Mangonel: A form of catapult Mantlet: Detached fortification preventing direct access to a gateway; low outer wall. Mask head: An animal head employed in conjunction with interlace or foliage motifs. Mausoleum: Structure for a tomb.

See also: Dungeon, Aperture, Pediment, Enceinte, Church