big talk; tall tale; exaggeration
Colloquial noun for boastful or exaggerated talk, often used in the phrase 駄法螺を吹く (to talk big, to tell tall tales).
He's always talking big.
That story is probably just a tall tale.
A more formal, literary expression for 'big talk' or 'boasting'.
Compound of 駄 (da, 'poor, worthless') and 法螺 (hora, 'boasting, tall tale'). The exact historical derivation is uncertain, but the combination intensifies the sense of empty or exaggerated talk.