sharp·en·er
noun/ˈʃɑːpnə(r)/
/ˈʃɑːrpnər/
- (usually in compounds) a tool or machine that makes things sharp
磨具；削具 - a pencil sharpener
卷笔刀 - a knife sharpener
磨刀石
Oxford Collocations DictionarySharpener is used after these nouns:- knife
- pencil
- a pencil sharpener