Noun gilbert has 5 senses
- gilbert, Gb, Gi - a unit of magnetomotive force equal to 0.7958 ampere-turns
--1 is a kind of magnetomotive force unit
- Gilbert, William Gilbert, William S. Gilbert, William Schwenk Gilbert, Sir William Gilbert - a librettist who was a collaborator with Sir Arthur Sullivan in a famous series of comic operettas (1836-1911)
--2 is a kind of librettist; poet
- Gilbert, William Gilbert - English court physician noted for his studies of terrestrial magnetism (1540-1603)
--3 is a kind of doctor, doc, physician, MD, Dr., medico; physicist
- Gilbert, Humphrey Gilbert, Sir Humphrey Gilbert - English navigator who in 1583 established in Newfoundland the first English colony in North America (1539-1583)
--4 is a kind of navigator
- Gilbert, Cass Gilbert - United States architect who influenced the development of the skyscraper (1859-1934)
--5 is a kind of architect, designer
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