primary

A primary election; a preliminary election to select a political candidate of a political party.

The first year of grade school.

A base or fundamental component; something that is irreducible.

The most massive component of a gravitationally bound system, such as a planet in relation to its satellites.

A primary school.

Any flight feather attached to the manus (hand) of a bird.

A primary colour.

Primary site of disease; original location or source of the disease.

A directly driven inductive coil, as in a transformer or induction motor that is magnetically coupled to a secondary