• noun:   a preliminary election where delegates or nominees are chosen
• noun:   one of the main flight feathers projecting along the outer edge of a bird's wing
• noun:   coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit

  Example: "Current through the primary coil induces current in the secondary coil"

• adjective:   of first rank or importance or value; direct and immediate rather than secondhand

  Example: "Primary goals"

• adjective:   not derived from or reducible to something else; basic

  Example: "A primary instinct"

• adjective:   of or being the essential or basic part
• adjective:   of primary importance

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