T-bone (n.)youdaoicibaDictYouDict[T-bone 词源字典]
type of steak, 1916, so called from the T-shaped bone that runs through it. The verb meaning "to strike (another car, bus, etc.) from the side" is by 1970, from adjectival use in reference to crashes, attested from 1952, from the position of the two vehicles at impact.[T-bone etymology, T-bone origin, 英语词源]