לָשַׁן

From LSJ

τὰ ἐν τῷ σώματι ἀποκρινόμενα → bodily secretions

Source

English (Strong)

a primitive root; properly, to lick; but used only as a denominative from לָשׁוֹן; to wag the tongue, i.e. to calumniate: accuse, slander.