machinist
/məˈʃiːnɪst/noun
1- a person who operates a machine, especially a machine tool（尤指）机床操作工; 机械工人; 机械师。
1.1
- Brit. a person who operates a sewing machine〈英〉缝纫机工。
1.2
- a person who makes machinery机械制造者。