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Definition of Suction cup
1. Noun. A cup-shaped device (made of rubber, glass, or plastic) that produces a partial vacuum; used to adhere or draw something to a surface.
Generic synonyms: Device
Definition of Suction cup
1. Noun. A device comprised of a flexible material formed into a three-dimensional shape with one flat open face which, when pressed against a flat surface will adhere to that surface due to the lower pressure in between the flexible material and the flat surface as compared to the pressure outside the flexible material. ¹
¹ Source: wiktionary.com