Eggs: run out by start of evening (3)
I believe the answer is:
roe
'eggs' is the definition.
(I've seen this in other clues)
'run out by start of evening' is the wordplay.
'run out' becomes 'ro' (cricket abbreviation).
'by' means one lot of letters go next to another.
'start of' says to take the initial letters.
The initial letter of 'evening' is 'e'.
'ro'+'e'='ROE'
(Other definitions for roe that I've seen before include "shy animal" , "A mass of fish-eggs" , "Lobster's ripe ovary" , "Mass of fish's eggs" , "Mass of fish eggs" .)