adj.
1.of first rank or importance or value
2.not derived from or reducible to something else
3.most important element
4.of or being the essential or basic part
5.of primary importance primary n.
1.a preliminary election where delegates or nominees are chosen
2.one of the main flight feathers projecting along the outer edge of a bird's wing
3.coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
Idiom of the Day
set up (something) or set (something) up
to establish something, to provide the money for something
The newspaper company provided the money to set up the travel magazine. The company set up a new department to test new products.