As a Noun: 1. A window covering made of thin horizontal strips of wood, plastic, or metal. The strips can be turned to a different angle in order to let in more or less light. English = Venetian blind. 2. A door or window with flat, sloping pieces of wood or glass across its frame. English = louvred window, louvres, louvred door. As a Verb or Adjective: 1. Of louvres on a window, to be adjusted. 2. Of a window or door, to have flat, sloping pieces of wood or glass across its frame. English = (be) louvred.