secondary

being of second rank or importance or value; not direct or immediate; "the stone will be hauled to a secondary crusher"; "a secondary source"; "a secondary issue"; "secondary streams"

inferior in rank or status; "the junior faculty"; "a lowly corporal"; "petty officialdom"; "a subordinate functionary"

depending on or incidental to what is original or primary; "a secondary infection"

not of major importance; "played a secondary role in world events"

belonging to a lower class or rank

the defensive football players who line up behind the linemen

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