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pollute to make dirty or harmful to health by mixing in or adding waste material.
pollution an act or instance of polluting. [2 definitions]
polo a game played on horseback by two teams of three or four members each. The players use mallets with long handles to hit a small wooden ball into the opponent's goal.
polygon a flat, closed figure with three or more sides bounded by straight lines.
polyp a small water animal with a soft body and a mouth surrounded by tentacles. Polyps attach themselves to rocks or other underwater objects. Corals, sea anemones, and jellyfish spend part of their lives as polyps and part of their lives floating freely.
pomegranate a red fruit with a tough rind and many seeds. The seeds are in a juicy pulp and can be eaten. [2 definitions]
pomp a splendid display; magnificence.
pompous showing an exaggerated sense of own's own importance.
poncho a cloak that is like a blanket with a hole in the center for a person's head.
pond a small body of still water.
ponder to think about something deeply and carefully.
pony a kind of small horse.
pony express a system of delivering the mail using riders on horseback. The pony express ran between St. Louis, Missouri and Sacramento, California during 1860 and 1861.
ponytail a hair style in which all the hair is drawn up and tied at the back so that the ends hang free.
poodle a breed of dog. Poodles range in size from very small to large and have thick, curly hair that can be cut in a fancy way.
pool1 any small area of liquid that has collected on a surface; puddle; pond. [4 definitions]
poor without money, possessions, or other basic needs. [5 definitions]
pop1 to make a short, sharp sound. [9 definitions]
pop2 (informal) relating to or performing popular music. The word "pop" is a short form of popular.
pop3 (informal) father.
popcorn a kind of corn whose kernels pop open into puffs when heated. [2 definitions]