Derrin Is A Gender-neutral Name With Irish Roots. Meaning "great," Itll Remind Baby That Theres Nothing They Cant Achieve. An Alternative Spelling Of Darren, Derrin Is Also A Variation Of The Old English Name Darin, In Addition To The Welsh Name Deryn. With Its Meaning Of "bird," Deryns Welsh Roots Add A Touch Of Whimsy To The Proper Sound Of Derrin.