ZOO

(plural zoos), dated [formal] zoological gardens [noun] [C] - an area in which animals, esp. wild animals, are kept so that people can go and look at them, or study themI think zoos should let their animals roam around as freely as possible, not keep them in cages.The zoo has so far had no success in breeding pandas.Soon the only black rhinoceroses left may be those in zoos.The prisoners said that they felt like animals in a zoo.We watched the zoo-keeper (= a person who works in a zoo, taking care of the animals) feeding the lions.