Meaning of slå opp | Babel Free

Definitions

1. to break up (to end a relationship)
   idiomatic, intransitive
2. to break up, end a relationship with each other
   intransitive, reciprocal
3. to mount in a high location for all to see (e.g. an announcement)
   transitive
4. to publish with big headlines
   transitive
5. to open (e.g. books, doors, etc.)
   transitive
6. to look up (something) in a book
   ambitransitive, broadly
7. to put up (often a tent)
   transitive

Examples

“Og om de lurer på noko, så kan de slå det opp i læreboka.”

And if you are unsure about something, you can look it up in the textbook.