T-bone /ˈtiːbəʊn/noun 2verb 1forms 6 noun2 •A T-bone steak.The barbecue was over. It had been a good one; drinks, charcoaled T-bones, rare, a green salad and Meg's special dressing. — 1984 •A vehicular collision of this kind. verb1 •(slang) To collide perpendicularly with the side of another vehicle.Holmes, who was a lap ahead and in 6th spot, couldn’t avoid T-boning him and in the coming together they were both out. — 1984 formsT-boned · t-boned · T-boning · t-boning · T-bones · t-bones