Person of Latin American descent (esp. Mexican) inept in his usage of Spanish. By extension, any of such people that reneges his cultural heritage.
The US Border Patrol is full of pochos who, when they capture a Mexican crossing the border, beat him with even greater enthusiasm.
More than one Pocho or Mexican-American.
1. A group of people that have abandoned Mexico's culture and people.
2. Any Mexican who celebrates Cinco De Mayo in Mississippi.
Hey hector that Pocho called INS on me so I could get deported.