To have confidence or faith in someone or something. I trust my friend to keep my secret.
To believe in the reliability, truth, or ability of someone or something. She trusts the new software to improve her productivity.
To place reliance on something in the future. We trust that the weather will be good for the picnic.
To place (something) in the care or control of another; to entrust. He trusted the keys to the house to his neighbor while he was away.