armchair
US /ˈɑːrm.tʃer/
UK /ˈɑːrm.tʃer/

1.
sillón
a comfortable chair with sides that support your arms
:
•
He relaxed in his favorite armchair by the fireplace.
Se relajó en su sillón favorito junto a la chimenea.
•
The living room has a sofa and two matching armchairs.
La sala de estar tiene un sofá y dos sillones a juego.
1.
de sillón, teórico
done or experienced by reading or watching rather than by doing it oneself
:
•
He's an armchair critic who never actually tries to create anything.
Es un crítico de sillón que nunca intenta crear nada.
•
She enjoys armchair travel, reading books and watching documentaries about distant lands.
Disfruta de los viajes de sillón, leyendo libros y viendo documentales sobre tierras lejanas.