'Blather' definitions:

Definition of 'blather'

noun

Foolish gibberish [syn: blather, blatherskite]

verb

To talk foolishly; "The two women babbled and crooned at the baby" [syn: babble, blather, smatter, blether, blither]

From: GCIDE

Blather \Blath"er\ (bl[a^][th]"[~e]r), v. i. & t. [imp. & p. p. Blathered; p. pr. & vb. n. Blathering.] [Written also blether.] [Icel. bla[eth]ra. Cf. Blatherskite.] To talk foolishly, or nonsensically, or concerning matters of no consequence. --G. Eliot.
Syn: babble, smatter, blether, blither. [Webster 1913 Suppl. + WordNet 1.5]

From: GCIDE

Blather \Blath"er\, n. [Written also blether.] Voluble, foolish, or nonsensical talk; -- often in the pl. --Hall Caine. [Webster 1913 Suppl.]