home p Simon Nunn pearl [purl] –noun 1. a smooth, lustrous, variously colored deposit, chiefly calcium carbonate, formed around a grain of sand or other foreign matter in the shells of certain mollusks and valued as a gem. 2. mother-of-pearl; nacre. 3. one that is highly regarded for its beauty or value. 4. Printing. a type size measuring approximately five points. 5. a yellowish white. a b c d e f g h i j k l m n o p q r s t u v w x y z pear pearl pharmacy pebble piano photograph photographer pig pigeon pile pill ping-pong pink-pleas