Meaning ofblock offin English

Verb

1. to reserve a period of time (for a specific activity)
   The manager will block off two hours for the meeting.
   Synonyms:

   set asideallocatereservebookschedule
   Antonyms:

   leave openmake availablereleasecancel
2. to obstruct or hinder movement; restrict access
   The police block off the street to prevent pedestrians from entering.
   Synonyms:

   barobstructblockadehinderimpederestrictseal offcut off
   Antonyms:

   open upclearunblockfree upallow