means The plural of tongue — the muscular organs in our mouths used for tasting and talking, or by extension the languages people speak.

from From Old English 'tunge,' the word for both the fleshy organ and speech itself — a doubling of meaning that goes back to Proto-Germanic '*tungōn' and is a cousin of Latin 'lingua' (which gave us 'language' and 'linguistics'). The shared ancestor is reconstructed as something like '*dnghū-,' and that wandering 'd' is why Latin's 'lingua' looks oddly unlike its English relative. The sense of 'a language' — as in speaking in tongues — is ancient too, riding along with the organ from the very start.