IPA: /ˈɑːrmˌtʃɛr/
KK: /ˈɑrmˌtʃɛr/
Describing someone who engages in discussions or opinions about a subject without practical experience or involvement in it.
He is an armchair expert on politics, but he has never worked in government.
A type of chair that has supports on the sides for resting your arms.
She sat comfortably in her favorite armchair while reading a book.
Armchair → The word is formed from "arm" (from Old English "earm", meaning the upper limb) and "chair" (from Old French "chaiere", meaning a seat). An armchair is a seat that has support for the arms.
Think of the 'upper limb' ('arm') resting on the 'seat' ('chair') — that's why an armchair is a seat with arm support.