all ears

Eager to hear something, listening attentively, as in Tell me who else was invited? I'm all ears. [Colloquial; late 1700s] Also see all eyes.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.