swell

noun
A full or gently rounded shape or form. (the soft swell of her breast)
A gradual increase in sound, amount, or intensity. (there was a swell of support in favor of him)
A slow, regular movement of the sea in rolling waves that do not break. (there was a heavy swell)
A mechanism for producing a crescendo or diminuendo in an organ or harmonium.
A person of wealth or high social position, typically one perceived as fashionable or stylish. (a crowd of city swells)

adjective
Excellent; very good. (you're looking swell)