siphon

• A siphon can be:

  container for preparing soda water with a special cap with a pressure valve, [1] see siphon (container)
  colloquial: soda[1]
  in technology: a device, a bent pipe, preventing the entry of odors from pipes into rooms and streets, see siphon (sewage)[1]
  suction cup[1]
  in speleology: a sudden narrowing of a karst underground passage where the ceiling slopes down into the solid or liquid cave filling, see siphon (cave)
  in zoology: body part of mollusks, inhalant and/or exhalant tube, see siphon (molluscs)