Wiktionary
jam tart
n. 1 An open tartlet filled with jam 2 (context rare rhyming slang English) heart
Usage examples of "jam tart".
He got no jam tart or cake, but managed to beg two pieces of bread and butter from Diana.
He was about to return the compliment by suggesting that she might have lost a little weight when she leaned across and helped herself to another jam tart.
Reggie finished the last jam tart and filled Giffard's glass again.