a US city where many people go to gamble. It is the largest city in the state of Nevada and one of the fastest growing cities in the US. It first became popular in the 1940s. Criminals once operated many of the hotels, nightclubs and casinos (= gambling clubs) on Las Vegas Bouvelard, known as 'the Strip', but this has changed and the city now offers much more family entertainment. Las Vegas is also a place where many couples go to get married quickly.