This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium. Particularly: “It's quite likely that bịn rịn is a derivative of this.”
Ở xóm mình, nhờ có mấy đám ruộng biền đó, dầu mùa nắng nước sông cũng rịnvô, ướt-át luôn luôn, bởi vậy nhái ở được mà sanh-sản ra nhiều.
In our village, as some of the fields are next to wetland, even in the dry season, water from the river can penetrate to keep it [the fields] ever-flooded, creating a suitable habitat for frogs to procreate.
