Klein Is A Boys Name Of German Origin That Means "small." When Your Little Bundle Of Joy Is Placed In Your Arms, Youll Marvel At How Tiny They Are. Whether They Grow Up Tall Or Remain Slight In Stature, Baby Klein Will Bring A Smile To Your Face With Their Cute And Lovable Nature. Sharing Their Namesake With American Fashion Designer Calvin Klein Will Only Add To Their Endearing Charm And Sense Of Style.