noun1.anarrowgroovemadeintheground,especiallybyaplow.
2.anarrowgroovelikeortrenchlikedepressioninanysurface:thefurrowsofawrinkledface.
verb(usedwithobject)3.tomakeafurroworfurrowsin.
4.tomakewrinklesin(theface):tofurrowone'sbrow.
verb(usedwithoutobject)5.tobecomefurrowed.