Merriam Webster, page 540

If you ever want to use up more of your brain capacity on useless information, rather than doing something silly like reading a newspaper, just open a dictionary to any page. For example...

peduncle - a narrow supporting stalk

peignoir - a garment worn while combing the hair

pelage - the hairy covering of a mammal

pemmican - dried meat pounded fine and mixed with melted fat

peneplain - a large almost flat land surface shaped by erosion

pennon - a large narrow ribbonlike flag borne on a lance

A special prize goes to the first person to use all words in one sentence.