Expressions used in Everyday Spoken English in Social and Professional contexts
The verb to perk or to perk up means to become more cheerful, energetic or interesting. You might perk up after drinking a cup of coffee, for example. Informally the verb to perk can be used in place of or as an abbreviation of percolate. As a noun, a perk is a benefit or advantage to which you are entitled because of your job or work. A perk can also refer to an advantage or benefit that arises or comes out of a particular situation. In a colloquial context, a perk can refer to a coffee percolator.