in architecture, a term used for any stone that has a projection, and is laid rough in a building, to be afterwards carved into mouldings, capitals, coats of arms, &c.

Boffage is also that which is otherwise called rustic work, and consists of stones which advance beyond the naked, or level, of the building, by reason of indentures or channels left in the joinings. These are chiefly used in the corners of edifices, and thence called rustic quoins. The cavities or indentures are sometimes round, sometimes chain-framed, or bevelled, sometimes in a diamond form, and sometimes inclosed with a cavello, and sometimes with a listel.