4-F: Meaning and Definition of

4-F

Pronunciation: (fôr'ef', fōr'-), [key]
— n.
  1. a U.S. Selective Service classification designating a person considered physically, psychologically, or morally unfit for military duty.
  2. a person so classified.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.