Meaning

1. to catch (intercept something thrown)
2. to catch, to trap, to snare
3. to catch (e.g. a bus, a train)
4. to snatch, to grab
5. (colloquial) to get, to understand
6. (colloquial) to catch, to contract (e.g. a disease)
7. (colloquial) to grab (e.g. an opportunity), to make the most of
8. to catch oneself, to catch one another
9. to steady oneself, to grab hold
10. to catch oneself (realise one is doing something)
11. to be caught