Jacuzzi

google

ref

1960s: named after Candido Jacuzzi ( c. 1903–86), Italian-born American inventor.

wiktionary

ref

A generic use of the proprietary name Jacuzzi. Doublet of Jacob.

etymonline

ref

Jacuzzi (n.)

type of whirlpool bath, 1961, U.S. proprietary name, from Jacuzzi Brothers, then headquartered in California, who earlier made jet pumps for motorboats. The family immigrated from Friuli in northern Italy.