Simple Definition of top banana
: the most important or powerful person in a group or organization
Full Definition of top banana
: the leading comedian in a burlesque show; broadly : kingpin 2
Examples of top banana
He's the mob's top banana.
Origin of top banana
from a burlesque routine involving three comedians in which the one that gets the punch line also gets a banana
First Known Use: 1952
Seen and Heard
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