charms is a form of:

Parapet



noun
1.
(a low wall a protective wall on a fortification to shelter its defenders) ជញ្ជាំងពួនបាំង, បង្កាន់ដៃ
ENGLISH MEANING
noun
1.
A low wall, especially one serving to protect the edge of a platform, roof, bridge, or the like.
2.
A wall, rampart, or elevation of earth, for covering soldiers from an enemy's fire; a breastwork.