The Collaborative International Dictionary of English v.0.48:
patchboard \patch"board\ n. (Computers) A circuit board where circuits are completed and modified by making connections with patchcords. Syn: switchboard, plugboard. [WordNet 1.5]WordNet (r) 3.0 (2006):
patchboard n 1: telephone central where circuits are completed with patchcords [syn: switchboard, patchboard, plugboard]