'Piffle' definitions:

Definition of 'piffle'

noun

Trivial nonsense [syn: balderdash, fiddle-faddle, piffle]

verb

Speak (about unimportant matters) rapidly and incessantly [syn: chatter, piffle, palaver, prate, tittle- tattle, twaddle, clack, maunder, prattle, blab, gibber, tattle, blabber, gabble]

verb

Act in a trivial or ineffective way

From: GCIDE

Piffle \Pif"fle\, v. i. [imp. & p. p. Piffled; p. pr. & vb. n. Piffling.] To be sequeamish or delicate; hence, to act or talk triflingly or ineffectively; to talk nonsense or about trivial matters; to twaddle; piddle. [Dial. or Slang]
Syn: chatter, palaver, prate, tittle-tattle, twaddle, clack, maunder, prattle, gibber, tattle, blabber, gabble. [Webster 1913 Suppl. + WordNet 1.5]
2. To act in a trivial or ineffective way. [WordNet 1.5]

From: GCIDE

Piffle \Pif"fle\, n. Act of piffling; trifling talk or action; piddling; twaddle. [Dial. or Slang] "Futile piffle." --Kipling. [Webster 1913 Suppl.]