file down
B2 neutral separable transitive
In simple words
To use a rough tool to make something smaller or smoother.
Literal meaning: To rub something down with a file (a tool with a rough surface).
Meanings
1 B2 neutral
To use a nail file or metal file to smooth, reduce, or shape nails or a hard surface.
"She filed down her broken nail so it wouldn't catch on her clothes."
Grammar: separable
2 B2 neutral
To reduce a sharp or rough edge on a metal or hard object using a file.
"The locksmith filed down the edge of the key until it fit the lock perfectly."
Grammar: separable
Usage notes
A practical, everyday verb used in DIY, beauty (nail care), and metalworking contexts. The object typically refers to nails, metal edges, or rough surfaces.
Commonly used with
nails edge rough spot metal key teeth
Forms
Base
file down
I/you/we/they
3rd person
files down
he/she/it
Past simple
filed down
yesterday
Past participle
filed down
have + pp
-ing form
filing down
continuous
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