coolie        
noun [ C ]  old-fashioned offensive uk/ˈkuː.li/ us/ˈkuː.li/
 苦力(指亚洲无技术、廉价的工人)
an unskilled and cheaply employed worker in Asia
  Indian English(尤指在火车站、机场等为乘客搬运重物的)搬运工 
a person whose job is to carry things, especially travellers' bags at stations, airports, etc.