Definitions of tenor:

• noun:   the pitch range of the highest male voice
• noun:   pervading note of an utterance

  Example: "I could follow the general tenor of his argument"

• noun:   the adult male singing voice above baritone
• noun:   an adult male with a tenor voice
• adjective:   of or close in range to the highest natural adult male voice

  Example: "Tenor voice"

• adjective:   (of a musical instrument) intermediate between alto and baritone or bass

  Example: "A tenor sax"

• name:  A surname (very rare: popularity rank in the U.S.: #67219)