Dictionary Definition of “Maverick”

From thefreedictionary.com

Maverick-
1. An unbranded range animal, especially a calf that has become separated from its mother, traditionally considered the property of the first person who brands it.

2. One that refuses to abide by the dictates of or resists adherence to a group; dissenter.

So, I guess Sarah Palin isn’t wrong when she’s claiming to be a maverick.