Definitions of wonder:

• noun:   something that causes feelings of wonder

  Example: "The wonders of modern science"

• noun:   the feeling aroused by something strange and surprising
• noun:   a state in which you want to learn more about something
• verb:   have a wish or desire to know something

  Example: "He wondered who had built this beautiful church"

• verb:   place in doubt or express doubtful speculation

  Example: "I wonder whether this was the right thing to do"

• verb:   be amazed at
• name:  A surname (very rare: popularity rank in the U.S.: #48618)