What does "sharpener" mean?

A device for making things sharp.

What is a synonym for "sharpener"?

Common synonyms include: ax, blade, blade sharpener, cold steel, cutlery, cutter.

Pronounced //ˈʃɑː(ɹ)pənə(ɹ)//.

/ˈʃɑː(ɹ)pənə(ɹ)/ noun, slang

noun, slang ·Moderate ·High school level

Noun

1
A device for making things sharp.
"There was a pencil sharpener at the front of the classroom."
2
any implement that is used to make something (an edge or a point) sharper wordnet
3
That which makes something sharp. figuratively
"“Sir,” said the shepherd, “poverty is a great sharpener of the wits. […]"
4
An alcoholic drink taken at the start of the day, or just before a meal. informal

"Tom has an electric pencil sharpener."

From sharpen + -er.