1
- a long upholstered piece of furniture for several people to sit on长沙发。
1.1
- a reclining seat with a headrest at one end on which a psychoanalyst's subject or doctor's patient lies while undergoing treatment（病人接受心理分析或治疗时躺卧的）长榻, 诊察台。
with obj.
1
- （一般作 be couched in）express (something) in language of a specified style（用特定风格的语言）表达（某事）：
the assurances were couched in general terms.
用笼统的措辞作了保证。
2
- no obj. poetic/literary lie down〈诗/文〉躺下; 躺卧：
two fair creatures, couched side by side in deepest grass
两个美丽的生灵, 并肩躺在草丛深处。
3
- archaic lower (a spear) to the position for attack〈古〉平端（矛或枪）（准备攻击）。
4
- usu. as noun couching chiefly historical treat (a cataract) by pushing the lens of the eye downwards and backwards, out of line with the pupil〈主史〉用下压及后压晶状体的方式治疗（白内障）。
5
- (in embroidery) fix (a thread) to a fabric by stitching it down flat with another thread贴线缝绣：
gold and silver threads couched by hand
手工贴线缝绣的金丝和银丝。
短语
on the couch
- undergoing psychoanalysis or psychiatric treatment在接受心理分析; 在接受精神病治疗。
词源
Middle English （as a noun denoting something to sleep on; as a verb in the sense 'lay something down'）： from Old French couche (noun), coucher (verb), from Latin collocare 'place together' （see COLLOCATE）.
(亦作 couch grass)
mass noun
1- a coarse grass with long creeping roots, which can be a serious weed in gardens匍匐冰草; 小糠草, 红顶草; 茅根。
1.1
- Genera Elymus and Agropyron, family Gramineae: several species, in particular the Eurasian common couch (E. repens).野麦草属和冰草属, 禾本科： 数种, 尤指欧亚匍匐披碱草（拉丁名E. repens）。
词源
late 16th cent.: variant of QUITCH.