rickrack

名词 rickrack:

1. a narrow zigzag ribbon used as trimming
   同义词：ricrac

rick.rack

n.（名词）
A flat, narrow braid woven in zigzag form, used as a trimming for clothing or curtains.
荷叶边；波曲形花边带：一种被织成波曲形的窄平花边，用来作衣服或窗帘的配料

来源：
Reduplication of rack
rack的重迭