The act of speaking a language one does not know, or speaking elaborate but apparently meaningless speech, while in a trance-like state (or, supposedly, under the influence of a deity or spirits); glossolalia.

present participle of speak in tongues.

A schematic map of the human tongue, labelling which parts are (supposedly) receptive to different tastes.

plural of tongue twister

Sweet-speaking; persuasive; seductive.

A biennial weed (Cynoglossum officinale) with soft tongue-shaped leaves and an offensive odour. It bears nutlets covered with barbed or hooked prickles.

plural of tongue-pad

(obsolete) A great talker; a chatterbox.

(archaic) Having two tongues; double-tongued; two-tongued; (by extension) deceitful.

Having two tongues; double-tongued. / (by extension) Deceitful; lying; two-faced. / (rare) Possessing the ability to speak two languages; synonym of bilingual.