Meaning

noun Chinese tree bearing seeds that yield tung oil

originFrom Middle English tonge, from Old English tung, tunge (“tongue, language”), from Proto-West Germanic *tungā, from Proto-Germanic *tungǭ (“tongue”); along with Dutch tong, German Zunge, Swedish tunga, from Proto-Indo-European *dn̥ǵʰwéh₂s.

Etymology from Wiktionary, CC BY-SA 3.0