Definitions of discover:

• verb:   see for the first time; make a discovery

  Example: "Who discovered the North Pole?"

• verb:   make a discovery

  Example: "The story is false, so far as I can discover"

• verb:   make a discovery, make a new finding

  Example: "Roentgen discovered X-rays"

• verb:   find unexpectedly
• verb:   identify as in botany or biology, for example
• verb:   discover or determine the existence, presence, or fact of
• verb:   make known to the public information that was previously known only to a few people or that was meant to be kept a secret
• verb:   get to know or become aware of, usually accidentally