Definition of Merlin chair in English:

Merlin chair

noun

historical
  • An early type of wheelchair which is propelled by the occupant turning two crank-handles fixed at the ends of the armrests, which turn the two small front wheels of the chair (a third wheel or castor being set in the back rail).

Origin

Late 18th century; earliest use found in Fanny Burney (1752–1840), writer. From the name of John Joseph Merlin, Flemish inventor and maker of musical instruments, who invented this kind of wheelchair + chair.

Pronunciation

Merlin chair

/ˈməːlɪn ˌtʃɛː/