Enter a clue or pattern or both:
The Clue
Castle circler (4 letter answer)
The Answer
MOAT
Tags
Notes
The answer MOAT is seen frequently, appearing about once every 160 puzzles.
Related Clues
Fosse
Alternative to a fence
Attack deterrent
Castle defense
Castle ditch
Castle encircler
Castle isolator
Castle protection
Castle protector
Castle's protection
Defensive ditch
Defensive trench
Ditch of old
Fortress feature
Fortress protection
Keep guard
Part of a defense
Protective ditch
Protective trench
Ring of water
Torquilstone defense
Water ring
Zoo barrier
Zoo trench
Advanced sandcastle feature
Castle security system
Castle-visitor's hurdle
Ditch around a castle
Ditch at a ducal domicile
A drawbridge may span one
Hazard for a castle invader
Onetime means of defense
Trench around a fort
Water-filled trench
Castle's non-welcome mat
It may hold the fort
Definition
MOAT as a noun:
1. (moat, fosse) = ditch dug as a fortification and usually filled with water