| Noun | 1. | pearl - a smooth lustrous round structure inside the shell of a clam or oyster; much valued as a jewel | |
| 2. | pearl - a shade of white the color of bleached boneswhiteness, white - the quality or state of the achromatic color of greatest lightness (bearing the least resemblance to black) | |
| 3. | pearl - a shape that is small and round; "he studied the shapes of low-viscosity drops"; "beads of sweat on his forehead"round shape - a shape that is curved and without sharp angles teardrop - anything shaped like a falling drop (as a pendant gem on an earring) | |
| Verb | 1. | pearl - gather pearls, from oysters in the ocean | |