eave; eaves soffit
Refers to the underside of the eaves, especially in architectural or construction contexts. Often used in compound terms like 軒天井 (のきてんじょう).
The paint on the eaves soffit is peeling off.
Fire-resistant materials are used for the eaves soffit.
Compound of 軒 (のき, 'eaves') and 天 (てん, 'ceiling' or 'top'), referring to the ceiling-like underside of the eaves.