watchtower
US /ˈwɑːtʃˌtaʊ.ɚ/
UK /ˈwɑːtʃˌtaʊ.ɚ/
1.
a tall tower built for an observer to have a wide view, especially for guarding an area
:
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The guard stood alert in the watchtower, scanning the horizon.
•
From the ancient watchtower, they could see for miles.