Meaning of “hold sth/sb up” - Learner’s Dictionary

hold sth/sb up

phrasal verb with hold uk us /həʊld/ verb (past tense and past participle held)

B1 to make something or someone slow or late:

Sorry I'm late. I got held up in traffic.

(Definition of “hold sth/sb up” from the Cambridge Learner’s Dictionary © Cambridge University Press)