Meaning

1. A pearl, a precious, round shelly concretion from oysters or other molluscs
2. Its imitation
3. Mother of pearl, the natural material pearls are made from
4. Anything resembling a pearl's irregular ball-shape, notably a drop of liquid
5. (One of) the best quality, first pick, the cream
6. The size of type between diamant and nonparel, equated with the English pearl and standardized as 5 point.