1. To rapidly and steadly down-grade one's own motivation and progress in anything relating to life. Eg. fucking up or losing in life.
2. The event in which an airborne object front-end(line-of-vision) first descends toward the earth.
3. Actively snorting cocaine on a regular daily basis. Snorting cocaine with addiction.
I don't nose-dive anymore.
That man has been nose-diving since he quit his job and ain't working.
His frisbee toss took a nose-dive into the mac and cheese dish at the barbeque.
Mascot, friend, face, and loyal of the greatest collegiate athletics programs, and morale for The Ohio State University.
Ladies faint in his presence and the city of Columbus honors him.
Should be automic winner of Capital One's Mascot of the Year Contest during the NCAA college football season.