brainlet

plural brainlets

1. A subcomponent of a brain or thinking system.

   Let's call these five smaller brain units, brainlets: […] Each brainlet is found in a specific part of your thinking brain.

   2008, D. Brooklyn, The Black Son: What Makes You Tick, page 179

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   The Prof brainlet is the IT brainlet. The Prof embraces pure logic without the “messiness” of emotion or instinct. To The Prof, everything is objective and impersonal.

   2010, Meryl Runion, How to Restore Sanity to Our Political Conversations

2. obsoleteThe cerebellum.
3. informalA small brain; the brain of someone or something small or of someone who is not very intelligent.

   . Ah! spurn me not, for even worse thoughts have besieged my busy brainlet !

   1893, Fun - Volumes 57-58, page 27

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   ...viz. the railway : an invention which is so thoroughly English that, even supposing it likely to have occurred to any slow Prussian brainlet, it would still have been impossible to have found any other nation (excepting perhaps America) with spirit or capital sufficient to have afforded the plan a trial.

   1858, Henry Mayhew, The Upper Rhine: The Scenery of Its Banks and the Manners of Its People

   But a shade of bygone sorrow, Like a dream upon the morrow, Round his tiny brainlet clinging, Sets the wee cock ever singing,

   1884, The Eclectic Magazine of Foreign Literature, Science, and Art

   Then the blows came fast and heavy on his center-parted hair. Till his soft and tender brainlet was exposed unto the air—Ceased she not her work gymnastic till she sealed the masher's doom.

   1890, Locomotive Firemen's Magazine - Volume 14, page 450

   Freshie wants to turn ; he is literally yearning to turn, and he isn't going to take any chances on being put to help the carpenter saw wood, so he has figured it out in his little brainlet, that the best way to get a lathe is to pick one out and camp on it till the instructor gives him something to turn.

   1897, The Blue and Gold, page 153

   A whizzing spike, a chance shot that nearly grazed his nose, so dazzled his brainlet that the terrified creature doubled on his trail and came bounding back towards the train.

   1901, Charles King, Ray's Daughter: A Story of Manila, page 23

4. broadlyA dolt; a fool; someone having a small brain.

   I think he told Claudine the same thing when they met, and convinced the tiny brainlet of his sincerity.

   1905, Booth Tarkington, The conquest of Canaan: a novel, page 254

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   Still, we have in this country Whig writers—that is, party Whig writers, of the regular party guage, assuring the other little brainlets who believe their writings, that Ruskin is an author of equivalent genius to Jeremy Taylor's—a great man—an intellectual pinnacle—merely because he puts his hand to madnesses, because he abuses Protestantism, and thinks that Christians should not mind their own business, but all other people's businesses— exactly what a Whig of the latter-day school does in office, devising conspiracy bills for French people and sending advice to Germans— which they don't want, and don't take well;

   1859, Tait's Edinburgh Magazine, page 522