PLANETS ARE ROUND AND START WITH P SO THE ANSWER IS PLANETS ( i think )
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Planets
pentigon
Pennies, pipes, paper clip, pin, polka dots, planets, periods, push pins, pizza pan, paper plates and paint cans are round. They begin with the letter p.
The Kingdom of Plants starts with p.
INK
tulip
aardvark ... lol
Nirvana
Potatoes are veggies. Potato starts with p. :)
Flo Rida
The horse gait that starts with a 'p' is called Piaffe.
A basketball term that starts with P is pass.
Young Guns
bank