This is the 7949th most frequent Dutch word.
eitje
A small egg.
The word 'eitje' here is a diminutive form of 'ei' (egg) and is used to refer to a small egg or as a cute or familiar way to refer to an egg.
Ik at een eitje bij het ontbijt.
I ate an egg for breakfast.
In this context, 'eitje' is used idiomatically to mean something is very easy to do, akin to 'a piece of cake' in English.
Een ei bakken is een eitje!
Frying an egg is a piece of cake!
Here, 'eitje' once again refers to an actual egg in a diminutive form, suggesting tenderness, size, or even a sense of curiosity.