Nouns

(n)secondarythe defensive football players who line up behind the linemen
(n)secondary coil, secondary winding, secondarycoil such that current is induced in it by passing a current through the primary coil

Adjectives

(a)secondarybeing 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”
(s)junior-grade, lower-ranking, lowly, petty, secondary, subalterninferior in rank or status“a lowly corporal”, “petty officialdom”
(s)secondarydepending on or incidental to what is original or primary“a secondary infection”
(s)secondarynot of major importance“played a secondary role in world events”
(s)secondarybelonging to a lower class or rank