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.
While some types of meat are high in saturated fat, there are plenty of leaner options. Depending on the type of meat you choose and how you prepare it, you can safely include meat into your diet. Select leaner cuts of meat such as: lean beef: chuck, sirloin or loin.