長至腰部或更長的貼身無袖服裝，通常無領、常有鈕釦或口袋。至於長度至腰圍下方、前襟通常有鈕釦的貼身服裝則稱「馬甲」，其可能有衣袖，通常穿在襯衫之外、外套或夾克之內。

背心(服裝)　(P,,U,繁體中文-偏好,D,U,U)
pei hsin(P,,U,韋氏拼音-偏好,UF,U,U)
bèi xīn(P,,U,漢語拼音-偏好,UF,U,U)
bei xin(P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
vests(garments)　(P,,U,美式英語-偏好,D,U,PN)
vest(garment)　(,U,美式英語-非偏好,AD,U,SN)
vest(kleding)　(,U,荷蘭語-非偏好,AD,U,U)
waistcoats(vests)　(P,,U,British English-偏好,D,U,PN)
waistcoat(vest)　(,U,British English-非偏好,AD,U,SN)
vesten(kleding)　(,U,荷蘭語-非偏好,D,U,U)
justillo(prenda principal)　(P,,U,西班牙語-偏好,D,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>
................................背心 (服裝)

meaning/usage overlaps with....

西裝背心

英文....	Close-fitting main garments extending to the waist or just below. Sleeveless and usually collarless, and often having buttons or pockets. For close-fitting main garments extending below the waistline that are usually front-buttoning and may have sleeves, that are worn over a shirt and under a coat or jacket, use "waistcoats."
荷蘭語....	Nauwsluitende bovenkledingstukken voor het bovenlichaam tot de taille of net daaronder. Meestal zonder mouwen en boord en vaak met knopen of zakken. Gebruik 'gilets'.
西班牙語....	Úsese para designar una prenda principal ajustada que se extiende hasta la cintura o justamente debajo de ella; sin mangas; sin cuello, por lo general; y con frecuencia con botones o bolsillos. Para la prenda principal ajustada que se extiende por debajo de la línea de la cintura, generalmente abotonada por la parte delantera, que puede tener mangas y que se lleva sobre la comisa y debajo de un abrigo o chaqueta, use "chaleco”.

背心(服裝)............	[AS-Academia Sinica]
.................	國家教育研究院－雙語詞彙、學術名詞暨辭書資訊網 April 6, 2015
.................	經濟部智慧財產局－中華民國專利資訊檢索系統 April 6, 2015
.................	YAHOO!奇摩字典 April 6, 2015
.................	線上英漢字典 April 6, 2015
.................	Cambridge Dictionaries Online April 6, 2015
vests(garments)............	[VP]
.................	Livandi, Thesaurus of Clothing and Textile Terms, Personal Artifacts (1990)
.................	Kidwella and Steele, Men and Women (1989) 91; vests
.................	Detroit Art Registration and Information System Glossary (1980) vests
.................	CDMARC Subjects: LCSH (1988-) vests
.................	National Museum of American History, Dictionary of Costume (n.d.) vests
.................	Oxford English Dictionary (1961) vests
.................	Picken, Fashion Dictionary (1957) 367; vests
.................	V&A personal artifacts terminology (1991) vests
.................	Webster's Third New International Dictionary (1961) illustration; vests
.................	Random House Dictionary of the English Language (1987) vests
.................	AATA database (1995-) 150871 checked 26 January 2012
.................	Nomenclature 3.0 for Museum Cataloging (2010)
vest(garment)............	[VP]
.................	Chenhall, Revised Nomenclature (1988) vest
.................	Getty Vocabulary Program rules
.................	AAT-Ned (1994-)
waistcoats(vests)............	[VP]
.................	Waffen- und Kostüumkünde (1897-) illustration, Vol. 2, "Vocabulary of Basic Terms for Cataloguing Costume" - ICOM International Committee.; waistcoats
.................	Getty Vocabulary Program rules
.................	Personal Communication Term suggested by Valerie Mendes and Avril Hart, V & A Residency 3/93.; waistcoats
waistcoat(vest)............	[VP]
.................	Getty Vocabulary Program rules
vesten(kleding)............	[Bureau AAT]
.................	AAT-Ned (1994-)
justillo(prenda principal)............	[CDBP-DIBAM]
.................	Diccionario de la Lengua Española (1992) 859
Subject:............	[Bureau AAT]
.................	Waffen- und Kostüumkünde (1897-) illustration, Vol. 2, "Vocabulary of Basic Terms for Cataloguing Costume" - ICOM International Committee.; bodice jacket waistcoats
.................	AATA database (1995-) 150871 checked 26 January 2012
.................	Van Dale groot woordenboek (1994)

Getty AAT: 300209904 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300209904
聯合目錄： 背心 、pei hsin 、bèi xīn 、bei xin 、vests 、vest 、waistcoats 、waistcoat 、vest 、vesten 、justillo