Mace: A short staff with heavy head like a club

Machicolations: Openings in a floor allowing missiles to be dropped on the enemy below

Malvoisin: A large mound of earth or stone built by attackers near a castle used for firing from

Mangonel: A siege engine used for throwing large stones

Manor: The land owned by a lord.

Martyr: Someone who would rather die than renounce their faith

Mason: A craftsman who cuts and builds with stone

Men-at-arms: Common medieval soldiers

Merlon: The 'teeth' of the battlements between crenels

Minster: Large church originally linked to a monastery

Misericorde: A dagger with a fine blade used to put injured soldiers out of their misery on the battlefield

Moat: A ditch surrounding a building filled with water

Monastery: Where monks or nuns live

Monk: A man who has taken vows and joined a religious community

Motte: A large earth mound either natural or artificial on which a keep is built

Mouldings: Ornamental lines of carved projections under or over a plain surface

Mullion: Vertical bars in windows that divide the area into smaller sections

Murder-hole: Openings in a floor allowing missiles to be dropped on the enemy below

Nave: The main body of a church from the west end to the choir. The nave could be divided north and south by screens (More...)

Newel Stair: Spiral staircase made of keyhole shaped stones

Niche: An ornamental recess in a wall containing a statue

Obelisk: Memorial stone column

Occularium: The slit in a helmet for the wearer to see through

Of the Field: A term used in blazonry when a tincture is used more than once

Ogree Arch: A pointed arch with both concave and convex parts

Or: A colour used in heraldry representing the metal gold (More...)

Oratory: A small cell attached to a chapel

Ordinaries: The basic geometrical shapes (charges) used in heraldry (More...)

Oriel: A kind of bay window

Orle: A heraldic shape forming a border near the edge of a shield (More...)