What does the word damper mean?

Usage examples for damper

  1. P is a damper in the fire door for admitting air above the fire bars, and R is a damper for regulating the draught. – Modern Machine-Shop Practice, Volumes I and II by Joshua Rose
  2. I did not however like to retrace our footsteps without having made a careful search; and although my wound was still open and very painful I rapidly swallowed a portion of my allowance of damper and started with another detachment on foot to examine the country. – Journals Of Two Expeditions Of Discovery In North-West And Western Australia, Vol. 1 (of 2) by George Grey
  3. You can then add to its size as you please later on, and when it is going strong you can add damper wood if dry wood is scarce. – Young Knights of the Empire by Sir Robert Baden-Powell