nóż do masła

Well, I guess I'll just continue to use the butter knife.

Stir with a small spoon, or even better, a butter knife.

Just for the record, today your poor wife, she drops a butter knife in the hotel dining room.

You're the one who brought up the dull butter knife.

If it had been more I'd have stabbed him with one of the butter knives.

And who could possibly need more than three dozen butter knives?

I could go through a field of those things with a butter knife.

"Dinner is a social occasion," my wife said with a butter knife in her hand.

She found an old butter knife with the stored silver.

The blade looks like a butter knife in his hand.