from The Century Dictionary and Cyclopedia
- n. A downward draft or current of air, as in a chimney, the shaft of a mine, etc.
- n. A burden; anything that draws one down, especially in worldly circumstances: as, he has been a down-draft on me.
- Pertaining to a current of air or gas which flows downward: used in connection with furnaces.
Sorry, no etymologies found.