battlement, branch, plant

Boyd’s Bible Dictionary:

The barrier around the flat-roofed houses of the East (Deut. 22:8; Jer. 5:10).

Concise Bible Dictionary:

1. maaqeh, the balustrade or parapet round the flat roofs of houses required by the law for the protection of life (Deut. 22:8).
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. 5:10).
Jerusalem City Wall

Strong’s Dictionary of Hebrew Words:

Transliteration:
ntiyshah
Phonic:
net-ee-shaw’
Meaning:
from 5203; a tendril (as an offshoot)
KJV Usage:
battlement, branch, plant