idler
/ˈaɪdlə(r)/noun
1
- a habitually lazy person懒人。
1.1
- a person who is doing nothing in particular, typically while waiting for something闲人, 无所事事的人。
2
- a pulley that transmits no power but guides or tensions a belt or rope导带轮; 紧带轮。
2.1
- an idle wheel惰轮, 空转轮。