Today's word is jack-o'-lantern:
1750-1 Student II. 352 It..is..of a mere Jack~lanthorn nature, neither here nor there. 1817 COLERIDGE Biog. Lit. 293 The characters in this act frisk about, here, there, and everywhere, as teasingly as the Jack o'Lantern lights which mischievous boys..throw with a looking-glass on the faces of their opposite neighbours.