To take (the property of another) without right or permission. To present or use (someone else's words or ideas) as one's own. To get or take secretly or artfully: steal a look at a diary; steal the puck from an opponent. To give or enjoy (a kiss) that is unexpected or unnoticed. To draw attention unexpectedly in (an entertainment), especially by being the outstanding performer: The magician's assistant stole the show with her comic antics. Baseball To advance safely to (another base) during the delivery of a pitch, without the aid of a base hit, walk, passed ball, or wild pitch. To commit theft. To move, happen, or elapse stealthily or unobtrusively. Baseball To steal a base. The act of stealing. Slang A bargain. Baseball A stolen base. Basketball An act of gaining possession of the ball from an opponent. steal (someone's) thunder To use, appropriate, or preempt the use of another's idea, especially to one's own advantage and without consent by the originator.