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