Thayer's Greek Lexicon

 1. to teach
  1) to hold discourse with others in order to instruct them,
deliver didactic discourses
  2) to be a teacher
  3) to discharge the office of a teacher, conduct one's self
as a teacher
2. to teach one
  1) to impart instruction
  2) instill doctrine into one
  3) the thing taught or enjoined
  4) to explain or expound a thing
  6) to teach one something