We found 20 dictionaries that define the word suction cup:

General (14 matching dictionaries)

1. suction cup: Merriam-Webster
2. suction cup: American Heritage Dictionary of the English Language
3. suction cup: Collins English Dictionary
4. suction cup: Vocabulary.com
5. suction-cup: Wordnik
6. suction cup: Cambridge Advanced Learner's Dictionary
7. suction cup: Wiktionary
8. suction cup: Infoplease Dictionary
9. suction cup: Dictionary.com
10. Suction cup (cephalopod anatomy), Suction cup: Wikipedia, the Free Encyclopedia
11. suction cup: FreeDictionary.org
12. suction cup: Mnemonic Dictionary
13. suction cup: TheFreeDictionary.com

Computing (1 matching dictionary)

14. suction cup: Encyclopedia

Medicine (2 matching dictionaries)

15. suction cup: Merriam-Webster Medical Dictionary
16. online medical dictionary (No longer online)

Slang (1 matching dictionary)

17. Suction Cup: Urban Dictionary

Tech (2 matching dictionaries)

18. AUTOMOTIVE TERMS (No longer online)
19. Illustrated Glass Dictionary (No longer online)

Definitions from Wiktionary (suction cup) ▸ noun:  A cup made of flexible material, such as rubber, that uses suction as an adhesive. Similar: siphon cup, stirrup cup, menstrual cup, ventouse, mooncup, drinking-cup, suction tip, sucker, sponge, chop cup, more... Opposite: adhesion, repulsion, non-stick surface ▸ Words similar to suction cup ▸ Usage examples for suction cup ▸ Idioms related to suction cup ▸ Wikipedia articles (New!) ▸ Words that often appear near suction cup ▸ Rhymes of suction cup ▸ Invented words related to suction cup