"tunes" in the noun sense
1. tune, melody, air, strain, melodic line, line, melodic phrase
a succession of notes forming a distinctive sequence
"she was humming an air from Beethoven"
2. tune
the property of producing accurately a note of a given pitch
"he cannot sing in tune"
"the clarinet was out of tune"
3. tune
the adjustment of a radio receiver or other circuit to a required frequency
"tunes" in the verb sense
1. tune, tune up
adjust for (better) functioning
"tune the engine"
2. tune, tune up
adjust the pitches of (musical instruments
"My piano needs to be tuned"
Source: WordNet® (An amazing lexical database of English)
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