Flattery or smooth, persuasive talk used to charm or deceive someone.
Likely from Blarney, a village in Ireland famous for the Blarney Stone, which supposedly grants the gift of eloquence when kissed. The word evolved to mean any charming but insincere speech.
According to legend, kissing the Blarney Stone upside-down while suspended over a wall grants 'the gift of the gab'—thousands of tourists still do it annually! The word perfectly captures how Irish folklore influenced English vocabulary.
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