Bio, Azerbaijan

Bio is a village in the municipality of Marzəsə in the Astara Rayon of Azerbaijan.

Etymology

The correct name of the place name should be Bi'aov. The name of the settlement is derived from the Talysh words bi'a "cold" and ov "water".
Bi'u is a village in the Siyaku administrative unit of Astara district. It is located in the Lankaran lowland. The village takes its name from the name of a nearby mineral spring. Originally Buy'aov, this hydronym is composed of the Talysh words buy and ov, meaning "smelly, fragrant water".