(aviation) The primary landing gear of an aircraft, generally located slightly behind the aircraft's center of mass (or slightly ahead of it on a taildragger aircraft) and carrying the majority of the aircraft's weight.

plural of main bitch

A sound associated with alternating current which has a frequency a multiple of that of the mains electricity.

plural of main market

The principal place in which a company does business.

(UK, finance) The principal stock market of the London Stock Exchange.

A town in Newfoundland, Newfoundland and Labrador, Canada.

plural of main belt

plural of left main

plural of main group