Green’s Dictionary of Slang

cable tram n.

[rhy. sl.]

(Aus.) jam.

[Aus]Barrier Miner (Broken Hill, NSW) 30 Mar. 5/2: The digger who went along to order some rations from the British Tommy [...] ‘Uncle Ned, Cable Tram, Stand at Ease, Commander in Chief’ [...] ‘Bread, jam, cheese, beef’.