to get some information about sth/sb by asking, reading, etc
•
She'd been seeing the boy for a while, but didn't want her parents to find out.
•
I haven't found anything out about him yet.
•
\find out something (about something) what, when, etc…Can you find out what time the meeting starts?
•
\find out something (about something) that…We found out later that we had been at the same school.
Useful english dictionary. 2012.