具半圓形椅背的安樂椅，形成具翼部與扶手、裝有填塞料的單件家具。若是指具實心、圓形木質靠背，或將木桶切下部份所製成的椅子，則稱為「筒形椅」。

圓背安樂椅(P,,U,繁體中文-偏好,D,,)
環形安樂椅(,U,繁體中文-非偏好,UF,U,U)
yüan pei an le i (P,,U,韋氏拼音-偏好,UF,U,U)
yuán bèi ān lè yǐ (P,,U,漢語拼音-偏好,UF,U,U)
yuan bei an le yi (P,,U,漢語拼音(無聲調)-偏好,UF,U,U)
circular easy chairs(P,,U,英文-偏好,D,U,PN)
circular easy chairs(P,,U,荷蘭語-非偏好,D,U,U)
circular easy chair(,U,英文-非偏好,AD,U,SN)
circular easy chair(,U,荷蘭語-非偏好,AD,U,U)
barjaires(easy chairs)　(,U,英文-非偏好,UF,U,N)
barrel chairs(easy chairs)　(,U,英文-非偏好,UF,U,N)
chairs, barrel(easy chairs)　(,U,英文-非偏好,UF,U,N)
chairs, circular easy(,U,英文-非偏好,UF,U,N)
chairs, tub(circular easy chairs)　(,U,英文-非偏好,UF,U,N)
chairs, tub-back easy(,U,英文-非偏好,UF,U,N)
chairs, tub back easy(,U,英文-非偏好,UF,U,N)
chairs, tub easy(,U,英文-非偏好,UF,U,N)
easy chairs, circular(,U,英文-非偏好,UF,U,N)
easy chairs, tub back(,U,英文-非偏好,UF,U,N)
easy chairs, tub-back(,U,英文-非偏好,UF,U,N)
tub-back easy chairs(,U,英文-非偏好,UF,U,N)
tub back easy chairs(,U,英文-非偏好,UF,U,N)
tub chairs(easy chairs)　(,U,英文-非偏好,UF,U,N)
tub easy chairs(,U,英文-非偏好,UF,U,N)
poltronas de respaldo semicircular(P,,U,西班牙語-偏好,D,U,PN)
poltrona de respaldo semicircular(,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
............裝備 (層級名)
................家俱 (人工製品)
....................<依形式或功能區分之家具陳設>
........................家具
............................<依表現形式或功能區分之家具>
................................座位傢具
....................................<單一座位傢具>
........................................椅子 (家具形式)
............................................<依形式區分之椅子>
................................................安樂椅
....................................................圓背安樂椅

distinguished from....	筒形椅(圓形木製椅背椅)
distinguished from....	方背安樂椅

英文....	Easy chairs having a semicircular back forming a single upholstered piece with the wings and arms. For chairs with a solid, rounded wooden back or those made from cutting away parts of a barrel, use "barrel chairs."
荷蘭語....	Term uit de 18e eeuw voor luie stoelen met een halfronde rugleuning die een gestoffeerd geheel vormt met de oren en armleuningen. Gebruik 'barrel chairs' voor stoelen met een stevige, ronde rugleuning van hout of stoelen die uit een ton zijn gemaakt.
西班牙語....	Término del siglo XVIII para sillas poltronas que tienen un respaldo semicircular que forma una pieza única tapizada con las alas y brazos. Para sillas con un respaldo de madera redondeado sólido o aquellos fabricados cortando partes de un barril, use "silla barril”.

圓背安樂椅............	[AS-Academia Sinica]
.................	AAT-Taiwan 借詞編輯與使用原則 (2013)
circular easy chairs............	[VP]
.................	Journeymen Cabinet and Chairmakers' Pennsylvania Book of Prices (1811) 80
.................	Winterthur Museum, Object name list, unpub. (1987)
.................	AAT-Ned (1994-)
.................	Montgomery, American furniture: Federal Period (1966) illustration, 167
circular easy chair............	[VP]
.................	Getty Vocabulary Program rules
.................	AAT-Ned (1994-)
barjaires(easy chairs)............	[VP]
.................	Gilbert, Life and Work of Thomas Chippendale (1978) Vol. 1, 308
barrel chairs(easy chairs)............	[VP]
.................	Aronson, Encyclopedia of Furniture (1959) illustration, 36; barrel chairs
.................	Webster's Third New International Dictionary (1961) barrel chairs
.................	Random House Dictionary of the English Language (1987) barrel chairs
chairs, barrel(easy chairs)............	[VP]
.................	Getty Vocabulary Program rules
chairs, circular easy............	[VP]
.................	Getty Vocabulary Program rules
chairs, tub(circular easy chairs)............	[VP]
.................	Getty Vocabulary Program rules
chairs, tub-back easy............	[VP]
.................	Getty Vocabulary Program rules
chairs, tub back easy............	[VP]
.................	Getty Vocabulary Program rules
chairs, tub easy............	[VP]
.................	Getty Vocabulary Program rules
easy chairs, circular............	[VP]
.................	Getty Vocabulary Program rules
easy chairs, tub back............	[VP]
.................	Getty Vocabulary Program rules
easy chairs, tub-back............	[VP]
.................	Getty Vocabulary Program rules
tub-back easy chairs............	[VP]
.................	Getty Vocabulary Program rules
tub back easy chairs............	[VP]
.................	Montgomery, American furniture: Federal Period (1966) 167
tub chairs(easy chairs)............	[VP]
.................	Aronson, Encyclopedia of Furniture (1959) illustration, 444
.................	Gilbert, Life and Work of Thomas Chippendale (1978) Vol. 1, 308
.................	Gloag, Short Dictionary of Furniture (1965) 486
.................	Hayward, World Furniture (1965)
.................	Webster's Third New International Dictionary (1961)
.................	Random House Dictionary of the English Language (1987)
tub easy chairs............	[VP]
.................	Sheraton, Cabinet Dictionary (1970) illustration, 20
poltronas de respaldo semicircular............	[CDBP-DIBAM]
.................	Comité, Plural del término en singular
poltrona de respaldo semicircular............	[CDBP-DIBAM]
.................	TAA database (2000-)
Subject:............	[Bureau AAT]
.................	Random House Dictionary of the English Language (1987) barrel-back chairs
.................	Bureau AAT, RKD
.................	Montgomery, American furniture: Federal Period (1966) 167; barrel-back chairs

Getty AAT: 300037850 Getty AAT: http://www.getty.edu/vow/AATFullDisplay?find=costume&logic=AND¬e=&subjectid=300037850
聯合目錄： 圓背安樂椅 、環形安樂椅 、yüan pei an le i 、yuán bèi ān lè yǐ 、yuan bei an le yi 、circular easy chairs 、circular easy chair 、barjaires 、barrel chairs 、chairs, barrel 、chairs, circular easy 、chairs, tub 、chairs, tub-back easy 、chairs, tub back easy 、chairs, tub easy 、easy chairs, circular 、easy chairs, tub back 、easy chairs, tub-back 、tub-back easy chairs 、tub back easy chairs 、tub chairs 、tub easy chairs 、circular easy chairs 、circular easy chair 、poltronas de respaldo semicircular 、poltrona de respaldo semicircular