noun , adjective
■ noun
/ ˈɑːmtʃeə(r); ɑːmˈtʃeə(r); NAmE ˈɑːrmtʃer; ɑːrmˈtʃer/ a comfortable chair with sides on which you can rest your arms :
to sit in an armchair
■ adjective
/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