centrepiece

noun centrepiece

• focus — a central point, as of attraction, attention, or activity: The need to prevent a nuclear war became the focus of all diplomatic efforts.
• flagship — a ship carrying the flag officer or the commander of a fleet, squadron, or the like, and displaying the officer's flag.
• heart — Anatomy. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that receives blood returning from the body via the superior and inferior vena cavae, a right ventricle that pumps the blood through the pulmonary artery to the lungs for oxygenation, a left atrium that receives the oxygenated blood via the pulmonary veins and passes it through the mitral valve, and a left ventricle that pumps the oxygenated blood, via the aorta, throughout the body.
• core — The core of a fruit is the central part of it. It contains seeds or pips.
• linchpin — a pin inserted through the end of an axletree to keep the wheel on.