1. To thrust up the head, stretch out the neck, or carry the body in a bold or insolent manner; to stick up or out jauntilyr /> 2. To gain in vigor or cheerfulness especially after a period of weakness or depression — usually used with up
3. To make smart or spruce in appearance; freshen, improve — often used with up
4. To thrust up quickly or impudently

Perquisite — usually used in plural
In work, a benefit given to an employee. Common perks given by uk companies are company automobiles, luncheon vouchers, free private medical insurance, and free contributions to pension schemes. Perks are used to motivate staff. They can also save money for both employer and employee because lower tax and national insurance contributions are usually paid on perks than on an equivalent increase in pay.