definition of
tune

[1] #1 tune n. [melody, air, strain, melodic line, line, melodic phrase] a succession of notes forming a distinctive sequence; "she was humming an air from Beethoven". wn

[2] #2 tune v. [tune up] adjust for (better) functioning; "tune the engine". wn

[3] #3 tune n. the property of producing accurately a note of a given pitch; "he cannot sing in tune"; "the clarinet was out of tune". wn

[4] #4 tune v. [tune up] adjust the pitches of (musical instruments); "My piano needs to be tuned". wn

[5] #5 tune n. the adjustment of a radio receiver or other circuit to a required frequency. wn