probably borrowed from vatu "stone" in Raga or another language of Pentecost Island in Vanuatu (going back to Proto-Oceanic *patu "stone")
1981, in the meaning defined above
Vättern
vatu
vau
“Vatu.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vatu. Accessed 28 Nov. 2024.
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