ostrzyć in English:

Sharpen your pencil.

I want a knife to sharpen my pencil with.

What objects can be sharpened when they become blunt? Pencils can be sharpened when they become blunt.

Ted knew that the only way to sharpen his computer skills was to go to evening classes.

the marketization of everything sharpens the sting of inequality

Make sure you sharpen your pencils before the test begins.

to make a feeling stronger and more urgent: A series of attacks have sharpened fears of more violence.

I have to sharpen this knife. It's too dull.

You have to sharpen a blunt pencil.

My admiration for the professionals has sharpened considerably.

May I sharpen my pencil?

I get the feeling you still have an axe to grind. If you've got something to say come on out and say it.

I'm retiring. I'm tired of the daily grind.

She always has some axe to grind.

Do you know how to grind beef?

to grind ​coffee

He has had absolutely no part in the conspiracy; it was not he, but his brother, who had an axe to grind against the government.

I'll kill you! Knock your block off and grind you underfoot! You shithead! Die!

We roast just enough beans for the amount we're going to drink, and grind them in the coffee mill.

Are you grinding these rocks for any particular reason?

The daily grind of looking after three children wore her down.

Mark: I thought actually you were telling me earlier you were hiking yesterday, or not really hiking, doing the Grouse grind which I would assume most of our listeners would not be familiar with.

He grinds his teeth in his sleep. I could hear the gears grinding

don't let the bastards grind you down

Tom grinds his teeth in his sleep / I grind my own coffee beans every morning / You should grind your knives; they're getting pretty dull / It's been a real grind at work this month; overtime every day, and I even have to go in sometimes on weekends

a special stone for grinding knives