Definitions for lackbrain
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Wiktionary
lackbrain(Noun)
A person who lacks brains; an idiot.
Origin: lack brain
Webster Dictionary
Lackbrain(noun)
one who is deficient in understanding; a witless person
Citation
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"lackbrain." Definitions.net. STANDS4 LLC, 2013. Web. 20 Jun 2013. <http://www.definitions.net/definition/lackbrain>.

