What does "big wheel" mean?

A person with a great deal of power or influence, especially a high-ranking person in an organization.

What is a synonym for "big wheel"?

Common synonyms include: access, bad influence, big boy, big cheese, big cheese, big deal.

noun

noun ·Uncommon ·Advanced level

Noun

1
A person with a great deal of power or influence, especially a high-ranking person in an organization. idiomatic
"She's a big wheel at IBM."
2
an important influential person wordnet
3
A Ferris wheel. Ireland, UK
4
A low-riding tricycle with a large front wheel. US

(tricycle): Originally a brand name.