A flank or side part of a fortification; an architectural term for a side wall or supporting structure.
From Old French flanc, meaning 'side,' borrowed into English military architecture terminology to describe the angled parts of fort walls.
Flanque is a fortification term that shows how warfare shaped our architectural vocabulary—every angled wall in a castle served a tactical purpose to defend against attackers, and the words stuck around.
Complete word intelligence in one call. Free tier — 50 lookups/day.