/ ˈsʌnʃaɪn; NAmE / noun [ U ]
1.
the light and heat of the sun :
the warm spring sunshine
2.
( informal ) happiness :
She brought sunshine into our dull lives.
3.
( BrE , informal ) used for addressing sb in a friendly, or sometimes a rude way :
Hello, sunshine!
Look, sunshine, who do you think you're talking to?
•
IDIOMS
see ray