chihuahua Syllabification: (chi·hua·hua)Pronunciation: /CHəˈwäwä, SHə-, -wə/Definition of chihuahua noun a small dog of a smooth-haired, large-eyed breed originating in Mexico. Origin: early 19th century: named after ChihuahuaSpell chihuahua with -hua- in the middle and -hua at the end; the dog is named after Chihuahua in Mexico.chihuahua in other Oxford dictionaries Definition of chihuahua in the British & World English dictionary