Definitions
1.adjectiveSoft or tender by reason of ripeness; having a tender pulp."a mellow apple"
2.adjectiveEasily worked or penetrated; not hard or rigid."a mellow soil"
3.adjectiveNot coarse, rough, or harsh; subdued, soft, rich, delicate; said of sound, color, flavor, style, etc.
4.adjectiveWell matured; softened by years; genial; jovial.
5.adjectiveRelaxed; calm; easygoing; laid-back.
6.adjectiveWarmed by liquor, slightly intoxicated, stoned, or high.
7.nounOne who or that which mellows.