Bossage
Bossage ({not transcribed}) , noun
[French bossage, from bosse. See Boss a stud.]
1.
(Architecture) A stone in a building, left rough and projecting, to be afterward carved into shape. — Gwilt
2.
(Architecture) Rustic work, consisting of stones which seem to advance beyond the level of the building, by reason of indentures or channels left in the joinings. — Gwilt