armrest

UK: /ˈɑː^rmrɛst/ US: /ˈɑrmˌrɛst/ ,(ärm′rest′)

WordReference Random House Learner's Dictionary of American English © 2026

arm•rest /ˈɑrmˌrɛst/   n. [countable]

1. Furniture a support for the forearm, such as at the side of a seat.

WordReference Random House Unabridged Dictionary of American English © 2026

arm•rest  (ärm′rest′), n. 

1. Furniture a projecting, often padded support for the forearm, as at the side of a chair or sofa or between seats in a theater, car, or airplane. Also called arm. 

• arm¹ + rest¹ 1885–90

Collins Concise English Dictionary © HarperCollins Publishers::

armrest / ˈɑːmˌrɛst/ noun

1. the part of a chair, sofa, etc, that supports the arm
   Sometimes shortened to: arm