sink[Anglais]

verbe
1 : fall or sink heavily
2 : appear to move downward
3 : embed deeply
4 : fall heavily or suddenly; decline markedly
nom
1 : (technology) a process that acts to absorb or remove energy or a substance from a system
2 : a depression in the ground communicating with a subterranean passage (especially in limestone) and formed by solution or by collapse of a cavern roof