comp
n. countable B2 Upper Intermediate US //ˈkɑmp// comp
n. a free ticket or item given to you, usually for a show, hotel, or restaurant. It is short for 'complimentary'.
n. a complimentary item or service provided free of charge, typically in the hospitality or entertainment industries. Informal in register; derived from the adjective 'complimentary'.
The manager gave us a comp for our next meal.
Since the flight was overbooked, the airline offered me a hotel comp and a seat on the next plane.
While the casino floor was crowded, high rollers were often granted a comp for luxury suites to encourage continued play.
Usage
Commonly used as a noun in professional hospitality contexts; also functions as a verb meaning to provide something for free.