Definition of "seafoam"

seafoam

noun
countable and uncountable, plural seafoams
1. A foam created by the agitation of seawater.
  Quotations
  The bolts were stacked near a wall in shades of teal, seafoam, turquoise, navy, sapphire, sky blue, cream, gold, crimson, coral.
  2008 May 28, Eric Konigsberg, “A City Tailor Who Revels in the Boldest Sportswear”, in New York Times‎
2. A type of confectionery made with egg whites, corn syrup, and brown sugar.
  Quotations
  Though it is possible to beat the seafoam by hand, I strongly recommend using an electric beater, as it takes a lot of beating to get seafoam to a smooth and even consistency.
  2001, Laura Dover Doran, Making Great Candy: A Sweet Selection of Fun and Easy Recipes
3. Synonym of meerschaum (“type of mineral”)