perk
(Brit. informal)
[noun]
Synonyms: bonus, benefit, extra, fringe benefit, perquisite, plus

[TahlilGaran] English Synonym Dictionary ▲

I. perk¹ /pɜːk $ pɜːrk/ noun [countable usually plural]
[Date: 1800-1900; Origin: perquisite]
something that you get legally from your work in addition to your wages, such as goods, meals, or a car:
theatre tickets and other perks
perk of
the perks of working at a large law firm
I only eat here because it’s free – one of the perks of the job.

[TahlilGaran] Dictionary of Contemporary English ▲

II. perk² verb [intransitive and transitive]
informal to percolate(3)
perk up phrasal verb informal

1. to become more cheerful, active, and interested in what is happening around you, or to make someone feel this way:
She seemed kind of tired, but she perked up when Helen came over.
perk somebody ↔ up
There’s no doubt coffee perks you up.

2. to become more active, more interesting, more attractive etc, or to make something do this
perk something ↔ up
A little chili will perk up the sauce.

[TahlilGaran] Dictionary of Contemporary English ▲