pearl 
/ˈpɚl/ noun
plural pearls /ˈpɚl/ noun 1 [count] : a hard, shiny, white ball that is formed inside the shell of an oyster and that is often used as jewelry
▪ She wore a string of pearls. ▪ a pearl necklace ▪ pearl earrings — see color picture 2 [noncount] : mother-of-pearl 3 [count] : something that is shaped like a pearl
▪ Pearls of dew glistened on the grass. ▪ pearl onions 4 [count] : someone or something that is very good or admired
▪ She was a pearl among swine. ▪ The island is a cultural pearl of the Pacific.
▪ She wore a string of pearls. ▪ a pearl necklace ▪ pearl earrings — see color picture
▪ Pearls of dew glistened on the grass. ▪ pearl onions
▪ She was a pearl among swine. ▪ The island is a cultural pearl of the Pacific.
cast/throw pearls before swine
: to give or offer something valuable to someone who does not understand its value
pearls of wisdom
: wise words or statements
▪ He offered some pearls of wisdom [=good advice] about raising children. ▪ (humorous) A crowd of reporters gathered around the coach after the game to hear him dispense his usual pearls of wisdom.
▪ He offered some pearls of wisdom [=good advice] about raising children. ▪ (humorous) A crowd of reporters gathered around the coach after the game to hear him dispense his usual pearls of wisdom.
