We found 15 dictionaries that define the word block up:

General (10 matching dictionaries)

1. block up: Merriam-Webster
2. block up: Vocabulary.com
3. block up: Wiktionary
4. block up: Dictionary.com
5. block up: Rhymezone
6. block up: FreeDictionary.org
7. block up: Mnemonic Dictionary
8. block up: TheFreeDictionary.com

Business (1 matching dictionary)

9. block up: Legal dictionary

Computing (1 matching dictionary)

10. block up: Encyclopedia

Miscellaneous (1 matching dictionary)

11. block up: Idioms

Slang (2 matching dictionaries)

12. block up: Green’s Dictionary of Slang
13. block up: Urban Dictionary

Definitions from Wiktionary (block up) ▸ verb:  (transitive) To completely block or obstruct. ▸ verb:  (intransitive) To be completely blocked or obstructed. ▸ verb:  (transitive) To raise on blocks. Similar: blockade, block off, barricade, bar, block, close, roadblock, block out, stop, barrier, more... Opposite: unblock, clear, open, free, unclog Types: cork, plug, stopper, lid, cap, more... Adjectives: blocked, interblock, stonewall, barred, casted, shut, run, blanket, check, offset, flank ▸ Words similar to block up ▸ Usage examples for block up ▸ Idioms related to block up ▸ Wikipedia articles (New!) ▸ Words that often appear near block up ▸ Rhymes of block up ▸ Invented words related to block up