Noun greatcoat has 1 sense

1. greatcoat, overcoat, topcoat - a heavy coat worn over clothes in winter
   --₁ is a kind of coat
   --₁ has particulars: capote, hooded coat; chesterfield; surtout; ulster
   

Greatcoat

Noun - Clothing

A greatcoat is a heavy, warm overcoat typically made of wool, worn especially in cold weather.

Example sentence: During the winter storm, he wrapped himself tightly in his greatcoat to protect against the freezing temperatures.

Noun - Historical

In history, a greatcoat refers to a large and loose outer coat worn by soldiers or officers during military campaigns.

Example sentence: The soldiers bravely marched through the rain, their red greatcoats shining brightly against the gloomy battlefield.

Adjective - Informal

When used as an adjective, greatcoat means excellent, outstanding, or superb.

Example sentence: The band delivered a greatcoat performance that left the audience in awe.

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