propeller

Từ điển Oxford Advanced Learner 8th

pro·pel·ler [propeller propellers] BrE [prəˈpelə(r)] NAmE [prəˈpelər] noun
a device with two or more blades that turn quickly and cause a ship or an aircraft to move forward

Example Bank:
•The boat is fitted with a two-blade propeller.
•The front engine drives the propellers.
•The propeller suddenly stopped turning.