mellow
adjective(mel-low)
slightly and pleasantly intoxicated from alcohol or a drug (especially marijuana)
mellow
adjective(mel-low)
softened through age or experience
Examples:
Mellow wisdom. 
The peace of mellow age. 
mellow
verb(mel-low)
become more relaxed, easygoing, or genial
Synonyms: mellow out, 
melt, 
 Examples:
With age, he mellowed. 
mellow
adjective(mel-low)
having a full and pleasing flavor through proper aging
Examples:
A mellow port. 
Mellowed fruit. 
mellow
adjective(mel-low)
unhurried and relaxed
Synonyms: laid-back, 
Examples:
A mellow conversation. 
mellow
adverb(mel-low)
in a mellow manner
mellow
verb(mel-low)
make or grow (more) mellow
Examples:
These apples need to mellow a bit more. 
The sun mellowed the fruit. 
mellow
verb(mel-low)
soften, make mellow
Examples:
Age and experience mellowed him over the years.