egg · noun /eg/
egg (FOOD)
A1 C or U an oval object with a hard shell which is produced by female birds, especially chickens, and which is eaten as food
Dictionary examples:
a hard-boiled/soft-boiled egg
How do you like your eggs - fried or scrambled?
Learner example:
I like to eat soup, eggs, meat and salad, and drink orange juice. (Skills for Life (Entry 1); A1; Polish)
egg (BABY)
B2 C an oval object with a hard shell that contains a baby bird, insect or other creature
Dictionary examples:
The cuckoo lays her egg in another bird's nest.
After fourteen days the eggs hatch.
Learner example:
The only thing they can do is to lay eggs. (First Certificate in English; B2; Danish)
a nest egg
C2 a sum of money that has been saved or kept for a specific purpose
Dictionary example:
She used her nest egg to buy a really good piano.
Learner example:
She was the only heir of a rich family and her husband, who died ten years ago, le[f]t her a sizeable nest egg. (Certificate of Proficiency in English; C2; Catalan)