entonar

Etymology
From.

Verb

 * 1)  to be in tune
 * 2)  to tune up
 * 3)  to entone
 * 4)  to tone, tone up
 * 5)  to put on airs

Verb

 * 1) to be in tune
 * 2) to tune up
 * 3) to croon, sing
 * 4)  to get tipsy slightly drunk