D defs.my
Entry 1 sense Webster, 1913

Triforium

· Tri·fo·ri·um · IPA /tɹaɪ̯ˈfɔːɹɪəm/
01 n. The gallery or open space between the vaulting and the roof of the aisles of a church, often forming a rich arcade in the interior of the c…
  1. 1.
    The gallery or open space between the vaulting and the roof of the aisles of a church, often forming a rich arcade in the interior of the church, above the nave arches and below the clearstory windows.(Arch.)