Baleen is often called whalebone, but that name also can refer to the normal bones of whales, which have often been used as a material, especially as a cheaper substitute for ivory in carving.he whale then pushes the water out, and animals such as krill are filtered by the baleen and remain as food source for the whale. Baleen is similar to bristles and is made of keratin, the same substance found in human fingernails and hair.
Marco Polo (game) The game Marco Polo /ËmÉËrkoÊ ËpoÊloÊ/ is a form of tag played in a swimming pool. The origin of the game is unknown.
polo, marco. Polo, Marco definition. An Italian explorer of the late thirteenth and early fourteenth centuries; one of the first Europeans to travel across Asia. He visited the court of Kublai Khan (see âKubla Khanâ under âLiterature in Englishâ), the Mongol ruler of China, and became a government official in China.