main wheel
noun
1The first, or driving, wheel in a series of gears, especially in a clock or watch.
2 Aeronautics each of the wheels which are located near the centre of an aeroplane and bear most of its weight when it is on the ground, as distinguished from a nose or tail wheel.
Origin
Late 17th century; earliest use found in Joseph Moxon (1627–1691), printer and globe maker.
- marriage counselor
- marriage dress
- marriage encounter
- marriage equality
- marriage finger
- marriage guidance
- marriage guidance counsellor
- marriage licence
- marriage lines
- marriage money
- marriage noose
- marriage of convenience
- Marriage of the Adriatic
- marriage partnership
- marriage payment
- marriage portion
- marriage proposal
- marriage rate
- marriage ring
- marriage service
- marriage settlement
- marriage song
- marriage supper
- marriage value
- commercialize