narrow eyes; half-open eyes
Describes eyes that are narrowed, squinting, or not fully open. Often used with verbs like する or になる.
He narrowed his eyes as if the light were too bright.
fine mesh; fine texture; tight weave
Refers to a fine or dense structure, such as a sieve, fabric, or file. The gloss 'smooth cut (of a file)' is a technical use.
This net has a fine mesh, so even small insects can't escape.
The cat has its eyes half-closed, looking comfortable.
Finish it with a smooth-cut file.