What does curvy mean on dating sites?

A curvy woman is a big beautiful woman. Sometimes that means a plus size woman. So, if you are a big handsome man looking for love, you might consider dating a curvy woman. (Think Joan Holloway from Mad Men!)
Of course, some men have a certain fetish and they only want to date curvy women, which is understandable. In this case, they would be well-advised to join big beautiful women dating websites such as LargeFriends.com where a lot of plus size women are active members. Note that LargeFriends.com has offices in North America and Asia, but their Asia office only offers IT support, meaning all of their members are in western countries.