Definition
To go or travel where one wishes; to not be kept in custody or confinement.
Origins
From Middle English gon free, from Old English gān frīġne.
How People Actually Use It
Alteranative to eat a bag of dicks. Used when the effort required to bag dicks for consumption require more effort than the subject serves or time allows. Dicks, scattered and frolicking in their natural habitat. Unbagged and grazing quietly.
"Go free range some dicks, you’re not worth the time it takes to bag them."
Source: Urban Dictionary