a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar
- syrlig drink
the taste experience when vinegar or lemon juice is taken into the mouth
go sour or spoil
- "The milk has soured"
smelling of fermentation or staleness; one of the four basic taste sensations; like the taste of vinegar or lemons
- "sour milk"
having a sharp biting taste