Noah Webster
Bossage
BOSS'AGE, noun
1. A stone in a building which has a projecture, and is laid rough, to be afterwards carved into moldings, capitals, coats of arms, etc.
2. Rustic work, consisting of stones which advance beyond the naked or level of the building, by reason of indentures or channels left in the joinings; chiefly in the corners of edifices, and called rustic quoins. The cavities are sometimes round, sometimes beveled or in a diamond form, sometimes inclosed with a cavetto, and sometimes with a listel.