Duolingo is the world's largest online language learning platform. It was recognized as Apple's iPhone App of the Year of 2013 as well as Google Play's Best of the Best of 2013 and 2014. Duolingo's adaptive experience has gamified elements to make language learning more fun and effective. 200 million students are learning a language with Duolingo.
Definition of waffle. : a crisp cake of batter baked in a waffle iron.
waffle (third-person singular simple present waffles, present participle waffling, simple past and past participle waffled) (of birds) To move in a side-to-side motion and descend (lose altitude) before landing. Cf wiffle, whiffle. The geese waffled as they approached the water. To speak or write vaguely and evasively.