pet
n. countable A2 Elementary Oxford US //ˈpɛt// UK //pˈɛt// pet
n. an animal that you keep at home for company and pleasure rather than for work or food. Common examples include dogs, cats, and birds.
n. a domestic or tamed animal kept for companionship or pleasure. Often used as a modifier in compound nouns like 'pet food' or 'pet store'.
I have a small pet cat named Luna.
Many apartment buildings have strict rules about which kinds of pets residents are allowed to keep.
While dogs remain the most popular choice, many people find that smaller pets like hamsters or guinea pigs are better suited to urban living environments.
Usage
Commonly used as a noun adjunct to modify other nouns, such as 'pet owner' or 'pet project'.