Related Clues:
- Knox, perhaps, struggled to be heard
- Stronghold's to experience fresh uncertainty?
- Soldiers distrust defensive position
- Touching uncertainty in defence
- Defence gets beast to leave
- Pain-relieving drug
- Defensive wall or mound
- Defensive earthwork
- Tube rod (anag) - fortification
- Citadel
- Castle embankment
- Fence of stakes
- Line of stakes as a defence
- Defensive fieldwork
- Fence of stakes or iron railings