There are 2 main definitions of VIP in English:

VIP1

Syllabification: VIP
Pronunciation: /ˌvēˌīˈpē
 
/

noun (plural VIPs)

A very important person: a party for 400 VIPs from the world of sports and showbiz
Synonyms
celebrity, famous person, very important person, personality, big name, star, superstar, newsmaker;
informal heavyweight, celeb, bigwig, big shot, big cheese, honcho, top dog, megastar, big wheel, big kahuna, mucky-muck, high muck-a-muck, high muckety-muck

Definition of VIP in:

There are 2 main definitions of VIP in English:

VIP2

Syllabification: VIP
Pronunciation: /ˌvēˌīˈpē
 
/

abbreviation

Biochemistry Vasoactive intestinal polypeptide (or peptide), a substance that acts as a neurotransmitter, especially in the brain and gastrointestinal tract.

Definition of VIP in: