topknot
/ˈtɒpnɒt/noun
1- a knot of hair arranged on the top of the head顶髻。
1.1
- a decorative knot or bow of ribbon worn on the top of the head, popular in the 18th century头饰（流行于18世纪）。
1.2
- (in an animal or bird) a tuft or crest of hair or feathers（动物, 鸟的）一簇毛（发）; 羽冠。