"person of Mexican heritage in the U.S.," 1947, from Mexican Spanish dialectal pronunciation of Mexicano "Mexican," with loss of initial unaccented syllable [Barnhart]. Said to have been in use among Mexican-Americans from c. 1911. Probably influenced by Spanish chico "boy," which also is used as a nickname. The adjective in English is attested by 1967. Fem. form is Chicana.
town founded in 1833, named from a Canadian French form of an Algonquian word, which, according to Bright, is either Fox /sheka:ko:heki/ "place of the wild onion," or Ojibwa shika:konk "at the skunk place" (sometimes rendered "place of the bad smell"). The Ojibwa "skunk" word is distantly related to the New England Algonquian word that yielded Modern English skunk (n.). Related: Chicagoan (1847; Chicagoian is from 1859).