(of an animal) Having a brain which is naturally smooth in appearance. / (of a human) Lissencephalic; having a brain which lacks convolutions due to malformation.

(science fiction) A hypothetical megastructure of immense computational capacity powered by a Dyson sphere.

present participle of rack one's brain

Third-person singular simple present indicative form of rack one's brain

simple past tense and past participle of rack one's brain

plural of organic brain syndrome

any disorder of mental function due to physiologic (organic) causes rather than mental causes

An addiction to anger and outrage brought about by overconsumption of sensationalist media.

(idiomatic) To seek information from someone knowledgeable; to ask questions of someone.

(figuratively) To struggle to think of or remember something.