"sours" in the noun sense
a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
2. sour, sourness, tartness
the taste experience when vinegar or lemon juice is taken into the mouth
3. sourness, sour, acidity
the property of being acidic
"sours" in the verb sense
1. sour, turn, ferment, work
go sour or spoil
"The milk has soured"
"The wine worked"
"The cream has turned
2. sour, acidify, acidulate, acetify
make sour or more sour
Source: WordNet® (An amazing lexical database of English)
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