"primaries" in the noun sense
1. primary, primary election
a preliminary election where delegates or nominees are chosen
2. primary, primary feather, primary quill
one of the main flight feathers projecting along the outer edge of a bird's wing
3. primary
astronomy) a celestial body (especially a star) relative to other objects in orbit around it
4. primary coil, primary winding, primary
coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit
"current through the primary coil induces current in the secondary coil"
Source: WordNet® (An amazing lexical database of English)
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