underlip

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underlip

(ŭn′dər-lĭp′)
n.
The lower lip.
References in classic literature ?
I'm not a young lady," Evelyn flashed; she bit her underlip.
His face being quite pale, his eyes shining open, and a great cut on his underlip bleeding profusely, gave this young fellow a fierce and ghastly air, which perhaps struck terror into many spectators.
She was Dounia over again, twenty years older, but without the projecting underlip.