maverick \ˈmav-rik, ˈma-və-\

Merriam-Webster's online definition for maverick:

Function:

noun

Etymology:

Samuel A. Maverick †1870 American pioneer who did not brand his calves

Date:

1867

1: an unbranded range animal ; especially : a motherless calf
2: an independent individual who does not go along with a group or party