Pronunciation: (fīn'tOOn', -tyOOn'), [key]
—v.t., -tuned, -tun•ing.
1. to tune (a radio or television receiver) to produce the optimum reception for the desired station or channel by adjusting a control knob or bar.
2. tune (def. 16).
3. to make minor adjustments in so as to produce stability, improvement, or the precise results desired: to fine-tune the nation's economy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.