It's spelled voluptuous.
It means :
1. having strong sexual appeal; "juicy barmaids"; "a red-hot mama"; "a voluptuous woman"
(synonym) juicy, luscious, red-hot
(similar) sexy
2. (of a woman's body) having a large bosom and pleasing curves; "Hollywood seems full of curvaceous blondes"; "a curvy young woman in a tight dress"
(synonym) bosomy, busty, buxom, curvaceous, curvy, full-bosomed, sonsie, sonsy, well-endowed
(similar) shapely
3. furnishing gratification of the senses; "an epicurean banquet"; "enjoyed a luxurious suite with a crystal chandelier and thick oriental rugs"; "Lucullus spent the remainder of his days in voluptuous magnificence"; "a chinchilla robe of sybaritic lavishness"
(synonym) epicurean, luxurious, sybaritic, voluptuary
(similar) indulgent

A buxom woman is a voluptuous woman. Definitely not a woman who has sharp edges. She is a curvy, big bosomed women. This is not to say she is fat. She is not fat, but she would never be considered skinny by today's anorexic look. Buxom movie stars of the 40's and 50's Marilyn Monroe, Jane Russell, actually Betty Davis was but they made her strap down her bosom.

Curvaceous means having an attractively curvy figure. So this could be for a mountain, for a body, for hills or for slopes.

Gostosa is the feminine version of the Portugese word gostoso. The word gostosa is an adjective that means that someone is full-bosomed, curvy, or hot.

The likely word is "voluptuous" (shapely, curvy, ample -- for a human female)