observation car
US /ˌɑːbzərˈveɪʃən kɑːr/
UK /ˌɑːbzərˈveɪʃən kɑːr/
1.
a railroad passenger car with large windows or an open platform at the rear, designed for sightseeing
:
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The tourists enjoyed the scenic views from the observation car.
•
The train had a special observation car at the end.