v. i. [ imp. & p. p. Blattered ] [ L. blaterare to babble: cf. F. blatérer to bleat. ] To prate; to babble; to rail; to make a senseless noise; to patter. [ Archaic ] “The rain blattered.” Jeffrey. [ 1913 Webster ]

They procured . . . preachers to blatter against me, . . . so that they had place and time to belie me shamefully. Latimer. [ 1913 Webster ]

n. [ L. blateratio a babbling. ] Blattering. [ 1913 Webster ]

n. One who blatters; a babbler; a noisy, blustering boaster. [ 1913 Webster ]

n. Senseless babble or boasting. [ 1913 Webster ]

n. [ L. blatero, -onis. ] A senseless babbler or boaster. [ Obs. ] “I hate such blatteroons.” Howell. [ 1913 Webster ]