Blubber or butter is a term used to describe a type of FAT. It is often used to refer to the thick layer of FAT found in whales and other marine mammals, as well as the FAT found in dairy products such as butter. The crossword solutions for this term are FAT, which is an acronym for 'Fatty Acid Triglycerides'. This is a type of lipid molecule that is composed of three fatty acid molecules attached to a glycerol backbone. It is the primary form of energy storage in animals and is also found in many plant-based foods.