Phil in SF quoted Royal Assassin by Robin Hobb (The Farseer Trilogy, #2)
Young Fitz, the illegitimate son of the noble Prince Chivalry, is ignored by all royalty …
They were at the very edge of the parapet, looking out over the crenated wall at the open sea below.
— Royal Assassin by Robin Hobb (The Farseer Trilogy, #2) (62%)
new vocabulary: crenate
having a round-toothed or scalloped edge