7 letters · 14 points in Scrabble
noun a small sponge cake with a synthetic cream filling
originThe brand name is said to be a diminutive, twinkle + -ie (or otherwise modified), based on a billboard for "Twinkle Toe Shoes" in St. Louis, although there are also claims for solely one or the other. The meaning in reference to well-assimilated Asians is derived from the slur that they are "yellow on the outside, white on the inside".
Etymology from Wiktionary, CC BY-SA 3.0