2. A brand of outdoor footwear, best known for their river sandals. Some people would say Chacos are how you tell a real outdoors person from a poseur who may be wearing some other type of sandal. Chacos are generally available only from specialty paddling and outdoor specialty shops such as The Trailhead in Buena Vista, Colorado.
Clay - "How can you tell?"
Seth - "He's wearing Chacos."
Friend: Dude why the fuck are you calling me at 8am?
Baller: Sipping Dom P and doing lines off the table back in my suite with 20 hot ass chicks we met at the club last night, wanna join us for some chaco?
Baller #1: Damn this hangover is no joke
Baller #2: Fucking chaco...