Suction cup

A suction cup, also known as a sucker, is an object that uses the negative fluid pressure of air or water to stick to surfaces, creating a partial vacuum.[1]

One cup suction lifter.

Suction cups are inspired by the ones used by octopuses and squids.[2]

References
  1. ""Suction Cup" m-w.com". Merriam Webster: An Encyclopædia Britannica Company. Retrieved 2012-06-01.
  2. "Well-Armed Design: 8 Octopus-Inspired Technologies". livescience.com. Retrieved July 30, 2015.
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