Eggs round five, with starter of anchovy (3)
I believe the answer is:
ova
'eggs' is the definition.
(term for egg cells)
'round five with starter of anchovy' is the wordplay.
'round' becomes 'o' (round can mean a round object).
'five' becomes 'V' (Roman numeral).
'with' is a charade indicator (letters next to each other).
'starter of' suggests taking the first letters.
The first letter of 'anchovy' is 'a'.
'o'+'v'+'a'='OVA'
(Other definitions for ova that I've seen before include "Release of women" , "Likely end for Russian Fed cup players" , "Fertility clinic stock!" , "Potential life sources" , "Eggs; sounds like above" .)