[boo-gan-veel for 1; boo-guh
n-vil, boh-, Fr. boo-gan-veel for 2] 
| 1. | Louis An⋅toine de [lwee ahn-twan duh] , 1729–1811, French navigator. |
| 2. | the largest of the Solomon Islands, in the W Pacific Ocean: part of Papua New Guinea. 78,000; 4080 sq. mi. (10,567 sq. km). |
| Bou·gain·ville (bōō'gən-vĭl', bōō-gāɴ-vēl') A volcanic island of Papua New Guinea in the Solomon Islands of the southwest Pacific Ocean. It was discovered by Louis de Bougainville in 1768. |
| Bougainville, Louis Antoine de 1729-1811. French explorer who circumnavigated the globe (1766-1769) with a crew that included astronomers and naturalists. |