apple of discord

/ˈapəl ɒv dˈɪskɔːd/

/ˈæpəl ʌv dˈɪskoːɹd/

[phrase]

apple of discord

[PHRASE]

a thing that is the source of a trouble, particularly by making people argue over it

(classical mythology) a golden apple thrown into a banquet of the gods by Eris (goddess of discord--who had not been invited); the apple had `for the fairest' written on it and Hera and Athena and Aphrodite all claimed it; when Paris (prince of Troy) awarded it to Aphrodite it began a chain of events that led to the Trojan War