pearl (Noun) — A smooth lustrous round structure inside the shell of a clam or oyster; much valued as a jewel.
pearl (Noun) — A shade of white the colour of bleached bones.
pearl (Noun) — A shape that is spherical and small. ex. "he studied the shapes of low-viscosity pearls"
pearl (Noun) — A brilliant or much-loved person who is highly valued.
pearl (Noun) — A small but valuable piece of information or advice. ex. "pearls of wisdom"
pearl (Verb) — Gather pearls, from oysters in the ocean.
pearl (Verb) — Make or form into small round grains. ex. "to pearl barley"