rumbler
/ˈrʌmblə(r)/noun
1- a person or thing that rumbles说话声音低沉的人; 发隆隆声（或辘辘声）的东西。
1.1
- a machine for peeling potatoes土豆削片机。
1.2
- historical a round bell containing a small hard object placed inside to rattle, formerly used especially on horses' harnesses〈史〉（尤指旧时马具上的）圆响铃。