TCB /T.C.B/, n. [IBM] 1. Trouble Came Back. An intermittent or difficult-to-reproduce problem that has failed to respond to neglect or {shotgun debugging}. Compare {heisenbug}. Not to be confused with: 2. Trusted Computing Base, an `official' jargon term from the {Orange Book}.
TCB 1. <jargon> {Trouble Came Back}. 2. <security> ({Orange Book}) {Trusted Computing Base}. 3. <operating system> {Task Control Block}. [{Jargon File}] (1998-07-02)
TCB Trusted Computing Base (MS, Palladium)