fab (2)EnglishOxford Dictionary of Englishfab2 /fab / ▸ noun a microchip manufacturing plant: the process will reduce the environmental damage caused by chip fabs. ▪ a process in a microchip manufacturing plant: it can only be made using five-layer fabs. ▸ verb ( fabs, fabbing, fabbed) [with object] produce (a microchip).