definition of
primary

[1] #1 primary s. not derived from or reducible to something else; basic; "a primary instinct". wn

[2] #2 primary s. [chief, main, principal, master] most important element; "the chief aim of living"; "the main doors were of solid glass"; "the principal rivers of America"; "the principal example"; "policemen were primary targets"; "the master bedroom"; "a master switch". wn

[3] #3 primary n. [primary election] a preliminary election where delegates or nominees are chosen. wn

[4] #4 primary n. [primary feather, primary quill] one of the main flight feathers projecting along the outer edge of a bird's wing. wn

[5] #5 primary n. (astronomy) a celestial body (especially a star) relative to other objects in orbit around it. wn