One male gets a turn with insect (5)
I believe the answer is:
imago
'insect' is the definition.
(I know that imago is a type of insect)
'one male gets a turn' is the wordplay.
'one' becomes 'i' (Roman numeral).
'male' becomes 'm' (common abbreviation).
'gets' is a charade indicator (letters next to each other).
'turn' becomes 'go' (a person's move in a board game).
'i'+'m'+'a'+'go'='IMAGO'
'with' acts as a link.
(Other definitions for imago that I've seen before include "Picture of saint" , "Last stage of adult insect" , "Insect's adult stage" , "imagines more than one" , "Final stage of an insect's development" .)