I can vaguely understand what "let the tragic loss define him" means , but I can't find a definition of "define" that fits the context. Does it, by chance, mean "let's the loss get the best of him"? Thank you~ Example: Police have no leads on the stolen porns, but Johnson, who calls himself the "Hugh Hefner of Muskegon," isn't letting the tragic loss define him. He has already gone out and purchased a brand new HD 3D TV so he and his fiancée can watch Blu-Ray blue movies in 3D. Source: Earlie Johnson Loses $7,500 African-American Porn Collection In Theft Background: Johnson came home to find his back door ajar. Someone had broken in and stolen the vintage collection of DVDs that took him many years to assemble. The guy didn't let the loss get the best of him, and took it as an opportunity to upgrade to Blu-ray.