A gyre is another name for a swirling vortex. Ocean gyres are large swirling bodies of water that are often on the scale of a whole ocean basin or 1000 s of kilometers across (hundreds to thousands of miles across).
Lean meats are meats with a relatively low fat content. Skinless chicken and turkey and red meat, such as pork chops, with the fat trimmed off are examples of lean meat.
According to the United States Department of Agriculture (USDA), lean meat is any serving of meat (3 ounces â about the size of a deck of cards) with less than 10 grams total fat, 4.5 grams saturated fat and 95 milligrams cholesterol.