1crack;le pronunciation: function: verb inflected form(s): crack;led; crack;ling etymology: frequentative of 1crackdate: circa 1560intransitive verb 1 a : to make small sharp sudden repeated noises lt;the fire crackles on the hearthgt; b : to show animation : sparkle lt;the essays crackle with witgt;2 : craze 3transitive verb : to crush or crack with snapping noises— crack;ling;ly adverb