A bent tube or device that uses atmospheric pressure to move liquid from a higher container to a lower one.

rainbow lorikeet (Trichoglossus moluccanus)

The physical process of a siphon; using pressure differences to move liquid from a higher container through a U-shaped tube into a lower container. Also known as [[虹吸现象|虹吸現象|hong2 xi1 xian4 xiang4]].

The physical phenomenon where liquid flows from a higher container through a U-shaped tube to a lower point using atmospheric pressure