An unfertilised female gamete (4)

I believe the answer is:

ovum

(Other definitions for ovum that I've seen before include "bit of life potentially" , "Female reproductive cell" , "Human egg cell" , "Female gamete" , "Reproductive cell, 'egg' in Latin" .)

I've seen this clue in The Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.