battlement

Concise Bible Dictionary:

2. netishoth: this signifies “expansion,” and may well refer to extended battlements. A parapet on the walls, with holes through which arrows could be shot, may be seen on some of the Assyrian monuments (Jer. 5:1010Go ye up upon her walls, and destroy; but make not a full end: take away her battlements; for they are not the Lord's. (Jeremiah 5:10)).
Jerusalem City Wall

Strong’s Dictionary of Hebrew Words:

Transliteration:
ma`aqeh
Phonic:
mah-ak-eh’
Meaning:
from an unused root meaning to repress; a parapet
KJV Usage:
battlement