What do you call a tuft of hair that stands up with a strong directional growth pattern?

A tuft of hair that stands up with a strong directional growth pattern is referred to as a cowlick. This term specifically describes a section of hair that grows in a different direction from the surrounding hair, often causing it to stick up or have an unruly appearance. Cowlicks are typically found at the crown or hairline and can be particularly noticeable in individuals with fine or straight hair.

In the context of hair cutting and styling, understanding the nature of cowlicks is essential for styling techniques, as they can influence how hair lays and should be cut. Recognizing the presence of a cowlick can help a stylist determine the best approach for achieving the desired look.

The other terms listed, such as whorl, flick, and spike, refer to different characteristics or styles of hair but do not accurately describe the specific phenomenon of a tuft of hair that grows in a distinct direction, making cowlick the correct term in this context.