Thayer's Greek Lexicon

 1. to think to be true, to be persuaded of, to credit, place
confidence in
  1) of the thing believed
1a1. to credit, have confidence
  2) in a moral or religious reference
1b1. used in the NT of the conviction and trust to which a man
is impelled by a certain inner and higher prerogative and
law of soul
1b2. to trust in Jesus or God as able to aid either in
obtaining or in doing something: saving faith
1bc) mere acknowledgment of some fact or event: intellectual
faith
2. to entrust a thing to one, i.e. his fidelity
  1) to be intrusted with a thing