Definitions

1. adjective

having a rough or unkempt surface, especially of hair

“The shaggy dog ran through the field.”

2. adjective

covered or tangled with shaggy or long growth, especially of hair or feathers

“The shaggy beards of the hippies were a defining feature of their culture.”

3. noun

a style of haircut or hairstyle that is cut to be shaggy or unkempt

“She got a new shaggy haircut and loved it.”