Def - definition of def by The Free Dictionary
Define def. def synonyms, def pronunciation, def translation, English dictionary definition of def. cool Abused, Confused, & Misused Words by Mary Embree Copyright © 2007, 2013 by Mary Embree adj. def·fer , def·fest Slang Excellent; first-rate.
DA: 73 PA: 13 MOZ Rank: 57