(transitive) To make adjustments (to an engine or bicycle drivetrain) in order to improve its performance. / (intransitive) To make preparations for vigorous exercise; to warm up.

A series of adjustments to an engine in order to improve its performance / A series of preparations for vigorous exercise; a warm-up

plural of tune-up

present participle of tune up

Third-person singular simple present indicative form of tune up

simple past tense and past participle of tune up