secondary

Coil such that current is induced in it by passing a current through the primary coil.

The defensive football players who line up behind the linemen.

Inferior in rank or status.

Being of second rank or importance or value; not direct or immediate.

“the stone will be hauled to a secondary crusher”

“a secondary source”

Belonging to a lower class or rank.

Depending on or incidental to what is original or primary.

“a secondary infection”

Not of major importance.

“played a secondary role in world events”