brainy

adj

1. (informal)Very intellectually capable.

   “She's brainy as well as pretty.”

2. (rare)Of or relating to the brain.

   “You shal vnderstande that there springeth of the brayny substaunce of his for*most Ventrikles, two senewes, […]”

   “There is a hammer and an anuile [within the ear]: whereof the hammer, ſtricking vpon the anuile, muſt of neceſſity beate off ſuch litle partes of the brainy ſteames, as flying about do light and ſticke vpon the toppe of the anuile: […]”

   “The two white threads, which in reuniting have ſtill left ſome ſpace between them, incloſe five little bags, which are the brainy ſubſtance, and the ſpinal marrow, which goes through to its extremity.”

   “It is most worthy of observation, that throughout the centre of this flexible spinal column exists a somewhat three-sided tube, for the purpose of containing the portion of the nervous system, improperly denominated the spinal marrow, a nervous or brainy production, on which the sensation and motion of the body and limbs depend, and which is connected superiorly with the greater brain before, and the lesser behind.”