/ ˈseɪvɪŋ; NAmE / noun
1.
[ C ] an amount of sth such as time or money that you do not need to use or spend :
Buy three and make a saving of 55p.
With the new boiler you can make big savings on fuel bills.
2.
savings [ pl. ] money that you have saved, especially in a bank, etc. :
He put all his savings into buying a boat.
I opened a savings account at my local bank.
3.
-saving (in adjectives) that prevents the waste of the thing mentioned or stops it from being necessary :
energy-saving modifications
labour-saving devices
space-saving fitted furniture
—see also face-saving
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WORD ORIGIN
Middle English : from the verb save .