trenchcoat
nounUK /ˈtrɛntʃkəʊt/
US /ˈtrɛntʃkoʊt/
A long coat with a belt that keeps you dry in the rain.
She wore a trenchcoat on the rainy walk to school.
OTHER MEANINGS
2. A long coat worn by soldiers in the trenches during World War I.
The soldier's trenchcoat was muddy from the battlefield.
3. A detective's long coat often seen in mystery stories.
The detective in the film wore a trenchcoat and a hat.
4. A waterproof coat made of heavy fabric.
He bought a trenchcoat to stay dry during storms.