PĔTAURUM (πέταυρον, πέτευρον), used in the Roman games, seems to
have been a board moving up and down, with a person at each end, and
supported in the middle, something like our see-saw; only it appears
to have been much longer, and consequently went to a greater height
than is common amongst us. The persons who took part in this game,
were called _Petauristae_ or _Petauristarii_.
PĔTORRĬTUM, a four-wheeled carriage, which, like the ESSEDUM, was
adopted by the Romans in imitation of the Gauls. It differed from
the HARMAMAXA in being uncovered. Its name is compounded of _petor_,
four, and _rit_, a wheel.