What is "lagunette"

Lagunette (17 April 1973 – after 1985) was a French Thoroughbred racehorse and broodmare. After winning one of her two races as a juvenile she improved to become a top-class performer in 1976, a year in which French-trained three-year-olds dominated the European classic races. After finishing third in the Prix de Diane she recorded Group One victories in the Irish Oaks and the Prix Vermeille, defeating top-quality opponents including Pawneese, Riverqueen, Sarah Siddons and Theia. Lagunette was sold at the end of 1976 but failed to win in four subsequent races and had little success as a broodmare.