[ ground-brey-ker ]
/ ˈgraʊndˌbreɪ kər /
a person who is an originator, innovator, or pioneer in a particular activity.
an original idea, product, or the like that leads to or makes possible further developments, growth, improvements, etc.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for groundbreaker
Robyn Lawley, a gorgeous Aussie who wears a size 12, has become a groundbreaker for curvy girls everywhere.Ralph Lauren Hires First Plus-Size Model Robyn Lawley|Isabel Wilkinson|September 19, 2012|DAILY BEAST