sharpener

A device for making things sharp.

• There was a pencil sharpener at the front of the classroom.

That which makes something sharp.figuratively

• “Sir,” said the shepherd, “poverty is a great sharpener of the wits. […]

An alcoholic drink taken at the start of the day, or just before a meal.informal

• The summery G&T somehow loses its clink-clink-fizz perfection as an after-work sharpener and just seems to rub our noses in the dank gloom ahead.
• And the new daycap has little in common with the stiff gin of the old-fashioned sharpener. Instead, it revolves around “spritz culture, mood-based cocktails, and small serves that tap into the sweet treat economy”.