Plesiosaurus

Plesiosaurus, an extinct marine animal with a small head and a long neck.

Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)

Plenist * Pleura
Platonic Year
Platt-Deutsch
Platte
Platten-See
Plauen
Plautus
Playfair, John
Pleiades
Pleiades, The
Plenist
Plesiosaurus
Pleura
Pleura-pneumonia
Plevna
Pleydell, Mr. Paulus
Plimsoll, Samuel
Plinlimmon
Pliny, the Elder
Pliny, the Younger
Plotinus
Plugston of Undershot