English Dictionary

bastard file

noun

A half-round file or rasp (being a flat file on one side, and a round file on the other); typically having coarse teeth. / A file of intermediate cut, neither very coarse nor very fine.

I used a bastard file to smooth out the rough edges of the metal.

意味（1）

A half-round file or rasp (being a flat file on one side, and a round file on the other); typically having coarse teeth.

意味（2）

A file of intermediate cut, neither very coarse nor very fine.