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See Bermuda rig.
[After Guglielmo Marconi (probably from its resemblance to the early antennas used by him for his wireless telegraphy).]
(Nautical Terms) nautical a fore-and-aft sailing boat rig with triangular sails
[C20: from Marconi, from its resemblance to some types of radio aerial]
a rig of triangular sails for a yacht.
[1915–20; after German. Marconi; appar. from its resemblance to radio antennas]