tune-up

Noun tune-up has 2 senses

• tune-up(n = noun.act) prolusion, warm-up - exercising in preparation for strenuous activity;
is a kind of preparation, readying

• tune-up(n = noun.act) - adjustments made to an engine to improve its performance;
is a kind of adjustment, readjustment, registration
Derived form verb tune up₁