Enter a clue or pattern or both:
The Clue
Ancient citadels (5 letter answer)
The Answer
ARCES
Tags
Notes
The answer ARCES is so rare that it appears less than once every 2500 puzzles.
Definition
ARC as a verb:
1. (arch, curve, arc) = form an arch or curve; "her back arches"; "her hips curve nicely"