1. a knot of hair arranged on the top of the head
2. a tuft of feathers on the head of a bird

Examples

• She wore her long hair in a neat topknot for the formal dinner.
• The ballerina secured her hair in a tight topknot before the performance.
• His grandmother always styled her hair in a simple topknot.
• The cardinal’s bright red topknot made it easy to identify.
• The cockatiel raised its feathered topknot when excited.
• She twisted her hair into a messy topknot for yoga class.