noun
latticed ceiling; coffered ceiling
Architectural term for a ceiling constructed with a lattice or grid of beams, often seen in traditional Japanese buildings.
この寺の本堂には美しい組み入れ天井がある。
The main hall of this temple has a beautiful latticed ceiling.
格天井 is a specific type of coffered ceiling with a grid of recessed panels, while 組み入れ天井 is a broader term for any latticed or framed ceiling structure.
Compound of 組み入れ (kumiire, 'assembling, fitting together') + 天井 (tenjou, 'ceiling'). The exact historical origin is uncertain, but the term describes a ceiling made by assembling a lattice framework.