noun

• (literally) A shelly concretion, usually rounded, and having a brilliant luster, with varying tints, found in the mantle, or between the mantle and shell, of certain bivalve mollusks, especially in the pearl oysters and river mussels, and sometimes in certain univalves. It is usually due to a secretion of shelly substance around some irritating foreign particle. Its substance is the same as nacre, or mother-of-pearl. Round lustrous pearls are used in jewellery.
• (literally) A shelly concretion, usually rounded, and having a brilliant luster, with varying tints, found in the mantle, or between the mantle and shell, of certain bivalve mollusks, especially in the pearl oysters and river mussels, and sometimes in certain univalves. It is usually due to a secretion of shelly substance around some irritating foreign particle. Its substance is the same as nacre, or mother-of-pearl. Round lustrous pearls are used in jewellery.
• (figuratively) Something precious.
  "I see thee compassed with thy kingdom's pearl."
• (figuratively) A valuable little nugget of information; especially, an aphorism or tip that is operationally useful for decision-making.
  "clinical pearls"

verb

• (transitive, sometimes figurative) To set or adorn with pearls, or with mother-of-pearl.
  "Syed Omar began to walk to the airport. Sweat pearled his tough brown skin, his fat bounced in rhythm."
• (transitive) To cause to resemble pearls in shape; to make into small round grains.
  "to pearl barley"
• (transitive) To cause to resemble pearls in lustre or iridescence.
  "A Teaching Company Scheme developing new technology for pearling light bulbs was established in October […]"
• (intransitive) To resemble pearl or pearls.

name

• A unisex given name from English.