Lackbrain n. : One who is deficient in understanding; a witless person.

Example:


Taxonomy
dictionary, encyclopedia, thesaurus browser, online dictionary, Free Online Dictionary, English dictionary, free online English dictionary, Translations, law, explanation, Acronyms, Idioms, brain, deficient, How to, TFD, existence, Page tools.

Defination from the web:
Lackbrain in the Online Dictionary. Meaning of Lackbrain. Pronunciation of Lackbrain. Translations of Lackbrain. Lackbrain synonyms, Lackbrain antonyms. ... Lackbrain. lacker. lackery caterpillar. lackey. Lackey caterpillar. lackey moth. lacking. lackluster. Lackawanna ...