definition of
lunatic

[1] #1 lunatic s. [moonstruck] insane and believed to be affected by the phases of the moon. wn

[2] #2 lunatic n. [madman, maniac] an insane person. wn

[3] #3 lunatic n. [daredevil, madcap, hothead, swashbuckler, harum-scarum] a reckless impetuous irresponsible person. wn