Also found in: Thesaurus, Legal, Idioms.
Related to block up: fill up, get behind, allow for, seek out, sort out
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|Verb||1.||block up - render unsuitable for passage; "block the way"; "barricade the streets"; "stop the busy road"|
obturate, occlude, close up, impede, obstruct, jam, block - block passage through; "obstruct the path"
close - bar access to; "Due to the accident, the road had to be closed for several hours"