A steak is a large slab of meat, usually beef, but also possibly fish such as salmon. Steak slab is cut perpendicular to the muscle fibres, in contrary to fillet, which is cut parallel to muscle fibres. Steaks are typically served grilled. A restaurant that specializes in steaks is known as a steakhouse.
Types of beef steaks:
filet mignon - a small choice tenderloin
flank - from the underside and can be tough
porterhouse - similar to T-bone but with more tenderloin
rib
rib eye - boneless rib steak
round
salisbury - from ground beef with onions and occasionally mushrooms
sirloin - one of the most popular commercial cuts
strip loin - also known as top loin - a porterhouse less the tenderloin