Silly Pi
What is C = πD
A solid cylinder or disk that fits snugly into a larger cylinder and moves under fluid pressure, as in a reciprocating engine, or displaces or compresses fluids, as in pumps and compressors.
A dinosaur bearing a large bony frill and three horns on its large four-legged body.
Popular in the UK, where ______ has been cultivated since the 1600s, its introduction to Europe from China is attributed to Marco Polo. When cooked, makes a pinkish-red paste.