The definition of sleek is someone or something that is smooth, glossy, shiny, well-groomed or sophisticated. Shiny and well-groomed hair is an example of hair that would be described as sleek. A shiny new sports car with clean lines is an example of a car that would be described as sleek.

What does it mean if something is sleek?

1 : smooth and glossy as if polished sleek dark hair. 2 : having a healthy well-groomed look sleek cattle. 3 : straight and smooth in design or shape a sleek jet. 4 : stylish and elegant a sleek actress.

How would you describe something sleek?

smooth and shiny; glossy, as a highly polished surface, well-kept hair or fur, etc.