長至腰圍下方的貼身服裝，前方通常有鈕釦，袖子可有可無，尤指十八世紀以降穿在襯衫之外、外套或夾克之內者。長至腰部或稍長一些；至於無袖且通常無領的貼身服裝則稱為「背心（服裝）」。

西裝背心(P,,U,繁體中文-偏好,D,U,U)
襯身服(,U,繁體中文-非偏好,UF,U,U)
西服背心(,U,繁體中文-非偏好,UF,U,U)
hsi chuang pei hsin (P,,U,韋氏拼音-偏好,UF,U,U)
xī zhuāng bèi xīn(P,,U,漢語拼音-偏好,UF,U,U)
xi zhuang bei xin (P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
waistcoats(garments)　(P,,U,英文-偏好,D,U,PN)
waistcoat(garment)　(,U,英文-非偏好,AD,U,SN)
gilets(P,,U,荷蘭語-偏好,D,U,U)
gilet(,U,荷蘭語-非偏好,AD,U,U)
chalecos(P,,U,西班牙語-偏好,D,U,PN)
chaleco(,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
........裝備與設備
............服飾 (層級名)
................服飾 (流行式樣)
....................<依形式區分之服飾>
........................主要服裝
............................<上半身之主要服裝>
................................西裝背心

meaning/usage overlaps with....

背心(服裝)

英文....	Close-fitting main garments extending to below the waistline. Usually front buttoning and sleeveless, but may have sleeves, especially garments from the 18th century. Worn over a shirt and under a coat or jacket. For close-fitting main garments extending to the waist or just below that are sleeveless and usually collarless, use "vests (garments)."
荷蘭語....	Nauwsluitende bovenkleding tot net onder de taille. Meestal mouwloos en met knopen aan de voorkant, gedragen over een overhemd en onder een jas of colbert.
西班牙語....	Úsese para designar una prenda principal ajustada que se extiende por debajo de la línea de cintura. Por lo general, abotonada por la parte delantera y sin mangas, pero puede tenerlas, especialmente las prendas desde el sgilo XVIII. Se lleva sobre la camisa y debajo de un abrigo o chaqueta. Para las prendas principales ajustadas que se extienden hasta la cintura o justamente por debajo de ella, que son sin mangas y generalmente sin cuello, use "justillo (prenda principal)”.

西裝背心............	[AS-Academia Sinica]
.................	遠流字典通 April 6, 2015
襯身服............	[AS-Academia Sinica]
.................	遠流字典通 April 6, 2015
西服背心............	[AS-Academia Sinica]
.................	Cambridge Dictionaries Online May 5, 2015
waistcoats(garments)............	[VP]
.................	Livandi, Thesaurus of Clothing and Textile Terms, Personal Artifacts (1990)
.................	Cunnington et al., Dictionary of English Costume (1965)
.................	Kidwella and Steele, Men and Women (1989) plate 26
.................	Canadian Parks Service Classification System (1992)
.................	Freshman, LACMA, Elegant Art (1983) GLOS
.................	Calasibetta, Fairchild's Dictionary of Fashion (1988)
.................	Fairholt, Costume in England (1968) Vol. 2
.................	Peterson, Book of the Continental Soldier (1968)
.................	Waffen- und Kostüumkünde (1897-) illustration, Vol. 2, "Vocabulary of Basic Terms for Cataloguing Costume" - ICOM International Committee.
.................	Etting, Military Uniforms in America (1974) illustration, GLOS
.................	National Museum of American History, Dictionary of Costume (n.d.)
.................	Waugh, Corsets and Crinolines (1954)
.................	Cunnington and Lucas, Costume for Births, Marriages, and Deaths (1978)
.................	Picken, Fashion Dictionary (1957) illustration, 369
.................	Ross and Chartrand, Cataloguing Military Uniforms (1977) illustration, 22
.................	Uniform of the Army of the U.S. (1890) 6
.................	V&A personal artifacts terminology (1991)
.................	Ashelford, Visual History of Costume: 16th Century (1986) illustration, GLOS
.................	Webster's Third New International Dictionary (1961)
.................	Carman, Dictionary of Military Uniform (1977)
.................	Random House Dictionary of the English Language (1987)
.................	BHA Subject Headings (1985-)
.................	Nomenclature 3.0 for Museum Cataloging (2010)
waistcoat(garment)............	[VP]
.................	Chenhall, Revised Nomenclature (1988)
gilets............	[Bureau AAT]
.................	AAT-Ned (1994-)
gilet............	[Bureau AAT]
.................	AAT-Ned (1994-)
chalecos............	[VP]
.................	TAA database (2000-)
chaleco............	[VP]
.................	Moliner, Diccionario de uso del español (2004) I:594
.................	O'Hara, Enciclopedia de la Moda (1989) 90
.................	TAA database (2000-)
Subject:............	[Bureau AAT]
.................	Candian Heritage Parks Canada, Visual Dictionary (1990) illustration; waistcoast, military
.................	Canadian Parks Service Classification System (1992) waistcoast, military; waistcoat, police
.................	Van Dale groot woordenboek (1994)

Getty AAT: 300216053 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300216053
聯合目錄： 西裝背心 、襯身服 、西服背心 、hsi chuang pei hsin 、xī zhuāng bèi xīn 、xi zhuang bei xin 、waistcoats 、waistcoat 、gilets 、gilet 、chalecos 、chaleco