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We found 16 dictionaries with English definitions that include the word rat-a-tat:
Click on the first link on a line below to go directly to a page where "rat-a-tat" is defined.

General (15 matching dictionaries)

1. rat-a-tat: Merriam-Webster.com [home, info]
2. rat-a-tat: Oxford Dictionaries [home, info]
3. rat-a-tat, rat-a-tat: Collins English Dictionary [home, info]
4. rat-a-tat: Vocabulary.com [home, info]
5. Rat-a-Tat, rat-a-tat: Wordnik [home, info]
6. rat-a-tat: Webster's New World College Dictionary, 4th Ed. [home, info]
7. rat-a-tat: Infoplease Dictionary [home, info]
8. rat-a-tat: Dictionary.com [home, info]
9. rat-a-tat: Online Etymology Dictionary [home, info]
10. rat-a-tat: Rhymezone [home, info]
11. rat-a-tat: Free Dictionary [home, info]
12. rat-a-tat: Mnemonic Dictionary [home, info]
13. rat-a-tat: LookWAYup Translating Dictionary/Thesaurus [home, info]
14. rat-a-tat: Dictionary/thesaurus [home, info]

Slang (1 matching dictionary)

15. rat-a-tat: Urban Dictionary [home, info]

(Note: See rat-a-tats for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (rat-a-tat) ▸ noun:  a series of short sharp taps (as made by strokes on a drum or knocks on a door) ▸ Also see rat-a-tats ▸ Word origin ▸ Words similar to rat-a-tat ▸ Usage examples for rat-a-tat ▸ Popular adjectives describing rat-a-tat ▸ Words that often appear near rat-a-tat ▸ Rhymes of rat-a-tat ▸ Invented words related to rat-a-tat