名词（解决问题的）线索，线团

及物动词绕成线球，提示

1. 帆耳：693 全开阀 clear way valve | 696 帆耳 clew | 697 帆耳索圈 clew cringle

2. 帆尾(下)角：clevis pin 栓 钉 | clew 帆尾(下)角 | close to the wind 迎向来风

3. 线索：clevis U形夹 | clew 线索 | clianthus 穗花矮树

2. clew的解释

noun

1. evidence that helps to solve a problem

Synonym: cluecue

2. a ball of yarn or cord or thread