armchair

Từ điển Oxford Advanced Learner 8th

arm·chair [armchair armchairs] noun, adjective
noun BrE [ˈɑːmtʃeə(r)] ; NAmE [ˈɑːrmtʃer] BrE [ɑːmˈtʃeə(r)] ; NAmE [ɑːrmˈtʃer]
a comfortable chair with sides on which you can rest your arms
•to sit in an armchair

Example Bank:
•He eased himself into the big armchair.

 
adjective BrE [ˈɑːmtʃeə(r)] ; NAmE [ˈɑːrmtʃer] only before noun
knowing about a subject through books and television, rather than by doing it for yourself
•an armchair critic/traveller
•a generation of armchair athletes who prefer to watch sports on TV rather than play