Serpent's tongue

Also found in: Idioms.
(Paleon.) the fossil tooth of a shark; - so called from its resemblance to a tongue with its root.

See also: Serpent

References in periodicals archive ?
Kazue painted Satomi's back as matte white as her face, leaving a two pronged fork like a serpent's tongue at the nape of her neck.
We have all felt the sharp nip of the serpent's tongue, that stinging ingratitude, the let down, the complete miscarriage of faith in a friend.
He got drunk, stood up and said, 'How sharper than a serpent's tongue it is to have a thankless child.