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tune (EN)
verb, noun

verb “tune”

infinitive tune; he tunes; past tense tuned; past part. tuned; ger. tuning
  1. make a musical instrument produce the correct sounds
    Before the concert began, the guitarist tuned his instrument to ensure it sounded perfect.
  2. adjust a device for best performance
    He tuned his bicycle's gears before the race to ensure a smoother ride.
  3. set a radio or TV to a specific channel
    He tuned the car radio to 98.3 FM to catch the live broadcast of the football game.
  4. focus or adapt one's senses to something specific
    She tuned her eyes to the dim light of the room, trying to make out the shapes in the shadows.

noun “tune”

singular tune, plural tunes or uncountable
  1. a melody
    The catchy tune of the ice cream truck had all the kids running outside with coins in their hands.
  2. the state of being correctly tuned
    After the technician adjusted my piano, all the keys were finally in tune.