<p><strong>Noun</strong></p><ul><li>A chair with sidepieces or arms to support a person's forearms or elbows.</li></ul><p><strong>Adjective</strong></p><ul><li>Theorizing without the benefit of practical experience: an armchair football coach.</li><li>Participating or experiencing indirectly or vicariously: an armchair traveler.</li></ul>