That depends a lot on what your culture says counts as nude. The technical term would only apply if they were completely nude, but a bikini may well be considered nude in certain parts of the world where showing hair is considered degenerate by some.
Hell I’d have difficulty defining nakedness myself… to stay with the bikini example, depending on skimpiness it leaves nothing to the onlooker’s imagination. It might as well be a simple layer of color over the intimate regions instead, and then we are essentially talking bodypaint which I would say definitely qualifies as nude in my book, but probably not in a lot of other people’s.