Wealthy and powerful person (informal)

Usage examples of fatcat.

If he's a fatcat, he'll figure that to mean 'bodyguard' and you'll gain some points.

Sourly watching all the fatcat international buyers and their bikinied bimbos stuffing their faces with champagne and caviare, Cameron felt they were guzzling all the profits she'd made Corinium from 'Four Men went to Mow'.

Funderburk was not a fatcat who wanted an ambassadorship in return for a campaign contribution.