save-all

noun4

1. •
   A trough to prevent waste in a paper-making machine.

   • In designing any save all system one of the cardinal principles is to send no material to the save-all which can be reclaimed in any other waya, and this applies particularly to the gravity variety. — 1907
2. •
   (historical) A device in a candlestick to hold the ends of candles, so they can be burned all the way down.

   • The remainder of the furniture consisted of a flat-candlestick, with a saveall; but, for snuffers, Bronze used her scissors, or indeed, upon most occasions, her fingers. — 1828
3. •
   (historical) A small sail sometimes set under the foot of another sail, to catch the wind that would pass under it.

   • Save-all sails I believe are commonly laced on to the foot of other sails, in light weather—she had something of this description under her lower studding sails. — 1835
4. •
   (no longer used) Something that prevents waste or loss.