The gun run, loosely based on the exploits of Naval squads in the Boer War, was a mainstay of the Royal Tournament.
International trade was the mainstay of Macau as a free port, and has been important until recently.
farming is the mainstay of the rural economy
The inshore fisheries are the economic mainstay of these communities.
A mainstay of the Joe Torre dynasty, Pettitte needs to stay healthy and excel if he wants a new contract.
Farming and forestry are still the mainstay of this area although tourism is rapidly expanding.
The mainstay of the helicopter fleet, the Oryx, was due for an in-service upgrade.
whitefish are the mainstay of the local industry
The first pick of Fox's second draft was Jordan Gross, who has become a mainstay at right tackle.
The mainstay of Scotland's bowling attack has just become a father.