Definition of "Promise" :
noun: grounds for feeling hopeful about the future
"There is little or no promise that he will recover."
noun: a verbal commitment by one person to another agreeing to do (or not to do) something in the future
verb: make a promise or commitment
verb: promise to undertake or give
"I promise you my best effort."
verb: make a prediction about; tell in advance
verb: give grounds for expectations
"The results promised fame and glory."