Definition: [noun] Training wheels on a child's bicycle.
Definition: [noun] Any person or thing that brings stability.
Definition: [noun] Any substance added to something in order to stabilize it.
Definition: [noun] A gyroscopically controlled fin or similar device that prevents the excess rolling of a ship in rough seas.
Definition: [noun] An airfoil that stabilizes the flight of an aircraft or missile.
Definition: [noun] A piece of backing fabric used in embroidery.