Strong's #6836: tsphiyah (pronounced tsef-ee-yaw')
from 6822; watchfulness:--watching.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
tsephı̂yâh
1) lookout post, lookout, watchtower
Part of Speech: noun feminine
Relation: from H6822
Usage:
This word is used 1 times:
Lamentations 4:17: "for our vain help: in our watching we have watched for a nation that could not"