noun
framework raising ceremony; topping-out ceremony
A traditional Japanese ceremony held when the framework of a building is completed, often involving prayers and offerings for safety.
来週、新築の家の棟上げ式を行います。
We will hold the framework raising ceremony for the new house next week.
Compound of 棟上げ (むねあげ, 'raising the ridgepole') + 式 (しき, 'ceremony').