clew

clew
/klu:; klu/ n
1 (nautical 海) metal loop attached to the lower corner of a sail 帆耳（连在帆下角的金属环）.
2 loop holding the strings of a hammock 吊床上穿绳索的环. clew, v [Tn, Tn.p]
~ sth (up/down) (nautical 海) raise or lower (a sail) 升或降（帆）.

牛津英汉双解词典