bar2 past tense and past participle barred, present participle barring [transitive]
to officially prevent someone from entering a place or from doing something
bar somebody from (doing) something
They seized his passport and barred him from leaving the country.
to prevent people from going somewhere by placing something in their way:
She ran back, but Francis barred her way.
A locked gate barred my entrance to the wood.
3 also bar up
to shut a door or window using a bar or piece of wood so that people cannot get in or out