<p><strong>Noun</strong></p><ul><li>a person or thing that opens</li><li>a device for opening sealed containers: can opener</li><li>the first of several theatrical numbers, variety acts, sports events, etc.: a humorous monologue as an opener</li><li>openers, Poker: cards in a hand, as a pair of jacks or better, that according to a given standard are worth enough to enable the holder to make the first bet of a deal</li></ul>