1An English word which has been given a Spanish form or pronunciation; a form of slang used by speakers of Mexican Spanish and others along the border with the United States, consisting of such words. Cf "Spanglish [adjective]".
2derogatory Excessive admiration in a Hispanic (originally a Mexican) American for the culture of the United States.
1940s; earliest use found in The New York Herald Tribune. From Mexican Spanish pochismo from pocho + -ismo.