Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "unfurrowed" in a sentence
"You can usually tell when Obama will have his A-game because his brow is unfurrowed and he looks like he just got a great night's sleep."
"The plow does not complete the tractor while the ground is yet unfurrowed."
"His face, that infallible index of the mind, presented a vast expanse, unfurrowed by any of those lines and angles which disfigure the human countenance with what is termed expression."