指屋頂上超出山牆的突出部位，其傾斜結構效果相當於屋簷。至於屋頂低處之\水平邊緣，自牆面突出的部分，則用「屋簷」一詞。

簷口(屋頂構造)　(P,,U,繁體中文-偏好,D,,)
山牆簷口(,U,繁體中文-非偏好,UF,U,U)
yan k'ou (P,,U,韋氏拼音-偏好,UF,,)
yán kǒu (P,,U,漢語拼音-偏好,UF,,)
yan kou (P,,U,漢語拼音(無聲調)-偏好,UF,,)
verges(P,,U,英文-偏好,D,U,PN)
verge(,U,英文-非偏好,AD,U,SN)
overstekende dakranden(P,,U,荷蘭語-偏好,D,U,U)
overstekende dakrand(,U,荷蘭語-非偏好,AD,U,U)
viseras(techo exterior)　(P,,U,西班牙語-偏好,D,U,PN)
visera(techo exterior)　(,U,西班牙語-非偏好,AD,U,SN)

藝術與建築詞典根目錄
....物件層面
........組件 (層級名)
............成分
................<依特定背景區分之組件>
....................建築元素
........................<結構元素與結構元素構造>
............................<結構元素>
................................<封閉式結構元素>
....................................<屋頂與屋頂構造>
........................................<屋頂構造>
............................................<外部屋頂構造>
................................................<簷口與簷口構造>
....................................................簷口 (屋頂構造)

distinguished from....

屋簷

英文....	Refers to those portions of a roof that project beyond the gable, in effect the raking equivalent of eaves; see "eaves" for portions projecting beyond the walls, at the lower horizontal edges of roofs.
荷蘭語....	Wordt gebruikt voor die delen van een dak die verder uitsteken dan de gevel, in feite hellende dakranden; 'dakrand' wordt gebruikt voor delen die verder uitsteken dan de muren, langs de horizontale onderrand van een dak.

簷口(屋頂構造)............	[AS-Academia Sinica]
.................	建築學英漢辭典 451
.................	朗文英漢雙解科技大辭典 1765
山牆簷口............	[AS-Academia Sinica]
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 May 8, 2012
verges............	[VP]
.................	Dictionary of Architecture and Construction (1975)
.................	Smit, Means Illustrated Construction Dictionary (1985)
.................	Putnam and Carlson, Architectural and Building Trades Dictionary (1974)
.................	Sturgis, Dictionary of Architecture and Building (1902)
verge............	[VP]
.................	Getty Vocabulary Program rules
overstekende dakranden............	[Bureau AAT]
.................	AAT-Ned (1994-)
overstekende dakrand............	[Bureau AAT]
.................	AAT-Ned (1994-)
viseras(techo exterior)............	[CDBP-DIBAM]
.................	Comité, Plural del término en singular
visera(techo exterior)............	[CDBP-DIBAM]
.................	Alvarez et al., Diccionario de la decoración (1968) 665
Subject:............	[Bureau AAT]
.................	Bureau AAT, RKD

Getty AAT: 300002376 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300002376
聯合目錄： 簷口 、山牆簷口 、yan k'ou 、yán kǒu 、yan kou 、verges 、verge 、overstekende dakranden 、overstekende dakrand 、viseras 、visera