prawn

n.

Any of various edible crustaceans similar to but larger than the shrimps.

As used in commercial farming and fishery, the terms shrimp and prawns are generally used interchangeably. In European countries, particularly the United Kingdom, the word "prawns" is more commonly on menus than the term "shrimp", which is used more often in the United States. Australia and other commonwealth countries follow this European/British use to an even greater extent, using the word "prawn" almost exclusively.