tum-tum noun4 •(informal) Stomach.Can't eat - my tum-tum's hurting. •(informal) Abdomen.The dog likes having its tum-tum rubbed. •(India) A dog cart; a rickshaw; a kind of vehicle.His fellow assistant, Dr Panna Lal, was in ecstasies at the prospect, and was urgent that they should attend it together in his new tum-tum. — 1924 •A dish made in the West Indies by beating boiled plantain in a wooden mortar until it is soft. formstum tums · tum-tums