- pierA raised platform built from the shore out over water, supported on piles; used to secure, or provide access to shipping; a jetty.
- petrastone, a weight equal to 14 pounds.
- petrifyTo turn to stone: to harden organic matter by permeating with water and depositing dissolved minerals.
- petraryA weapon used to hurl stones
- petrescentPetrifying; converting into stone.
- petricolousRock-dwelling; living among or on rocks.
- petrifactAn object made of stone, especially one formed from petrifaction.
- petro-stone