1. Exercising in preparation for strenuous activity
   - warm-up, prolusion 
2. Adjustments made to an engine to improve its performance

1. Adjust for (better) functioning
   - tune 
2. Adjust the pitches of (musical instruments)
   - tune

Derived forms: tunes up, tune-ups, tuned up, tuning up

Type of: adjust, adjustment, correct, preparation, readjustment, readying, registration, set

Encyclopedia: Tune up

• fiddle-shaped
• fiddlehead
• fiddlehead fern
• fiddleneck
• fiddler
• fiddler crab
• fiddlestick
• fiddlesticks
• fiddling
• fiddly
• Fidel Castro
• Fidel Castro Ruz
• fidelity
• fidget
• fidgetiness
• fidgety
• Fido
• fiducial
• fiduciary
• fiduciary duty
• fiduciary relation
• fie
• Fiedler
• fief
• fiefdom