mother-in-law seat
informal
noun
An extra seat at the back of a two-seater motor car or aircraft; specifically = dicky.
Origin
1960s.
- multielectron
- multi-element
- multi-employer
- multi-engine
- multi-engined
- multienzyme
- multi-ethnic
- multi-event
- multiexposure
- multifaced
- multifaceted
- multifactor
- multifactorial
- multifactorially
- multi-faculty
- multifaith
- multifamily
- multifarious
- multifariously
- multifariousness
- multiferous
- multifetal
- multi-fiber
- multi-fibre
- multifid