WordNet (r) 3.0 (2006):
William Gilbert n 1: a librettist who was a collaborator with Sir Arthur Sullivan in a famous series of comic operettas (1836-1911) [syn: Gilbert, William Gilbert, William S. Gilbert, William Schwenk Gilbert, Sir William Gilbert] 2: English court physician noted for his studies of terrestrial magnetism (1540-1603) [syn: Gilbert, William Gilbert]