to thrash in the chaff; also, to cleanse or sift, as barley.-to hesitate; to speak brokenly or weakly; to stammer; as, his tongue falters.-to tremble; to totter; to be unsteady.-to hesitate in purpose or action.-to fail in distinctness or regularity of exercise; -- said of the mind or of thought.-to utter with hesitation, or in a broken, trembling, or weak manner.-hesitation; trembling; feebleness; an uncertain or broken sound; as, a slight falter in her voice.