window envelope

1. 1.

   an envelope with a transparent panel that reveals the address on the enclosure

   Broaderenvelope

   Partswindow

Questions about window envelope

What does window envelope mean?

window envelope means "an envelope with a transparent panel that reveals the address on the enclosure".

Is window envelope a common word?

window envelope is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.