queen -- (something personified as a woman who is considered the best or most important of her kind; "Paris is the queen of cities"; "the queen of ocean liners")
king, queen, world-beater -- (a competitor who holds a preeminent position)
queen -- (one of four face cards in a deck bearing a picture of a queen)
queen -- ((chess) the most powerful piece)
queen, queen mole rat -- (an especially large mole rat and the only member of a colony of naked mole rats to bear offspring which are sired by only a few males)