The Origin of (some) Species (3)
I believe the answer is:
egg
This clue might be a double definition.
'the origin' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'some species' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how one could define the other.
'of' is the link.
Can you help me to learn more?
(Other definitions for egg that I've seen before include "explosive" , "Item with a yolk" , "Mine (slang)" , "Organism protected by shell" , "Item of food" .)