hold up phrasal verb ( see also ↑ hold )
1 . hold something ↔ up to support something and prevent it from falling down:
The roof is held up by massive stone pillars.
2 . hold somebody/something ↔ up [usually passive] to delay someone or something:
Sorry I’m late – I was held up at work.
3 . hold up something to rob or try to rob a place or person by using violence:
Two armed men held up a downtown liquor store last night.
⇨ ↑ hold-up
4 . to not become weaker:
His physical condition has held up well.