It's a French last name. Surname of a French tennis player of the last century, called René Lacoste. It is the name of a French company that is dedicated to the production of luxury clothing items, founded by the aforementioned tennis player. Its logo is a green crocodile. Name of a locality in the United States (State of Texas). Name of two French communes in Hérault and Vaucluse.
Lacoste is a French company engaged in the manufacture of clothing, footwear, suitcases, watches, among many other luxury items.