noun
birdbrain
BURD-brayn
noun
1
(informal) A silly or foolish person.
"Stop being such a birdbrain and read the instructions."
How to Use Birdbrain
Learner’s notesIn plain EnglishAn insulting way to call someone foolish or scatterbrained.
When to use it
Informal and mildly insulting, usually said in a joking rather than serious tone.
Word Forms
birdbrains plural
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Etymology
A compound of "bird" and "brain," playing on the old (and inaccurate) idea that birds are unintelligent.