save-all
/ˈseɪvɔːl/noun
1A holder or fitting in which the last of a candle may be burnt to the end, typically consisting of a small pan with a projecting spike on which to fix the candle. Now chiefly historical.
2A receptacle for collecting material which would otherwise be lost or wasted; specifically (in later use) an apparatus in a paper mill for recovering fibres from discharged water, and for clarifying the waste water for reuse.
3A stingy or parsimonious person; a miser. Compare spend-all English regional in later use.
4 Nautical. A sail set beneath another sail, or between two other sails, to increase a ship's capacity to catch the wind. Now historical.
adjective
Designating a receptacle for collecting material which would otherwise be lost or wasted.
Origin
Mid 17th century (in an earlier sense). From save + all noun.