Some words beginning with P and ending with K:
packparkpeckpeekpeakperkpickporkpockpunkpuck
atop
The curse word that starts with "p" and ends in "k" is likely "prick."
park, punk, pick, prank, pack, pork, pink, peacock, plank
peacock
pizzazz.
Pies
pill
pill pencil
prohibiter
Trollop.
township