lack-mind

plural lack-minds

1. archaicderogatoryAn unintelligent person.

   Let us not imitate the lazy indifference of those lack-minds who visit in succession half a dozen wondrous new ports in the Far East, and whose stagnant curiosity is satisfied by staring over the ship's side and evaporating their brains in clouds of tobacco.

   1887, Henry Knollys, “A Typhoon.—Nagasaki and Kobe.”, in Sketches of Life in Japan, page 17

   Synonyms: lackbrain