General Definition: 1. A crescent shaped object, or any thing or action directly or indirectly associated with this, such as a croissant or Cornish pastry. As a Noun: 1. A small crescent-shaped bread-like cake that is eaten for breakfast, especially in France. English = croissant. 2. A small crescent-shaped pie which consists of pastry folded around meat, vegetables, or cheese. English = pasty, Cornish pastry.