the taste experience when vinegar or lemon juice is taken into the mouth;
a cocktail made of a liquor (especially whiskey or gin) mixed with lemon or lime juice and sugar;
go sour or spoil; "The milk has soured"; "The wine worked"; "The cream has turned--we have to throw it out";
make sour or more sour;
smelling of fermentation or staleness;
showing a brooding ill humor; "a dark scowl"; "the proverbially dour New England Puritan"; "a glum, hopeless shrug"; "he sat in moody silence"; "a morose and unsociable manner"; "a saturnine, almost misanthropic young genius"- Bruce Bliven; "a sour temper;
inaccurate in pitch; "a false (or sour) note"; "her singing was off key";
having a sharp biting taste;
in an unpalatable state; "sour milk";
one of the four basic taste sensations; like the taste of vinegar or lemons;
