bi-fold door

1. 1.

   an interior door

   Broaderinterior door

   Partshinge

Questions about bi-fold door

What does bi-fold door mean?

bi-fold door means "an interior door".

Is bi-fold door a common word?

bi-fold door 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.