ahuecar

To hollow something out, literally (ahuecar un tronco, to hollow out a tree trunk) or in fixed phrases like ahuecar la voz (to deepen one's voice for effect) and the colloquial ahuecar el ala (to clear off, beat it). Moderately common, mostly through these set expressions.

• El carpintero ahuecó el tronco para hacer una canoa. — The carpenter hollowed out the trunk to make a canoe.
• Ahuecó la voz para sonar más solemne. — He deepened his voice to sound more solemn.
• ¡Ahueca el ala, que se hace tarde! — Beat it, it's getting late!

Missing that ahuecar el ala is a fixed colloquial phrase for "to leave/clear off" — taken literally it would mean "to hollow out the wing," which makes no sense outside the idiom.

• expression "Ahuecar el ala" — A widely documented colloquial expression meaning to leave or clear off, associated with birds fluffing/spreading their wings before taking flight — deeply rooted in Mexican colloquial speech and used throughout the Spanish-speaking world.