suction
nounUK /ˈsʌkʃən/
US /ˈsʌkʃən/
Suction is the force that pulls things together when air or water is taken away.
The octopus uses suction to hold on to rocks.
OTHER MEANINGS
2. The act of removing liquid or air from a space using a machine or tool.
The dentist used suction to clear the water from my mouth.
3. A force that makes two surfaces stick together when the air between them is removed.
The suction cup stuck firmly to the bathroom tile.
4. The process of drawing a fluid or gas into or out of something.
The pump creates suction to pull water from the well.