Longman Dictionary of Contemporary English - discourtesy

discover ~ v 1 to find something that was hidden or that people did not know about before  (I've just discovered a secret drawer in my old desk. | The Curies are best known for discovering radium.)  (- see invent) 2 to find out something yourself, without being told about it  (discover that)  (Police discovered that Kim's son was dealing in drugs.) + who/what/how etc  (Emily's not even two, but she's discovered how to open doors.) 3 to notice someone who is very good at something and help them to become successful and well-known - discoverer n