'Bossage' definitions:

Definition of 'Bossage'

From: GCIDE

Bossage \Boss"age\, n. [F. bossage, fr. bosse. See Boss a stud.]
1. (Arch.) A stone in a building, left rough and projecting, to be afterward carved into shape. --Gwilt. [1913 Webster]
2. (Arch.) 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. [1913 Webster]