Source : Webster's Revised Unabridged Dictionary (1913)

Save-all \Save"-all`\, n. [Save + all.]
   Anything which saves fragments, or prevents waste or loss.
   Specifically:
   (a) A device in a candlestick to hold the ends of candles, so
       that they be burned.
   (b) (Naut.) A small sail sometimes set under the foot of
       another sail, to catch the wind that would pass under it.
       --Totten.
   (c) A trough to prevent waste in a paper-making machine.

Source : WordNet®

save-all
     n 1: a receptacle for catching waste products for further use
     2: a sail set to catch wind spilled from a larger sail
     3: a net hung between ship and pier while loading a ship