sunnyside up

[suhn-ee-sahyd] /ˈsʌn iˌsaɪd/

noun

(of an egg) fried without breaking the yolk or being turned over, with the yolk remaining visible and somewhat liquid inside.

Compare over easy.

Origin

1900-05

Slang definitions & phrases for sunny side up

adjective phrase

Of eggs, fried on one side only with the yolk showing yellow (1900+)