A muscle car, by definition, is a 2 door ( or even some 4 door ) car with rear wheel drive, either a mid-size or full-size car designed for four or more passengers.
Since the Corvette is a 2-seater, it would be classified as a sports car.
Chevy calls it a sports car. I never considered a Corvette a muscle car. Matter of fact I'm one Chevy fan that doesn't really like Corvettes all that much. Same with Camaros.
Muscle
Travis hit it on the head, not what I call a muscle car by any means. More of a sprts car
its a typical sports car but it falls closer to muscle than tuner. its american and has a big V8 engine where tuners are typically japanese with smaller engines that are modified "tuned".
Really it's neither it's more sporty than anything