P
- Padgypaw, Padgy-pow - a newt (from Cornish language pajar paw)
- Pard - friend ("partner")
- Party - a young woman
- Peeth - well
- Pen - (a place-name element) headland or top (from Cornish language penn)
- Piggy widden - the runt of the litter
- Pig's-crow - pigsty
- Pilez - Avena nuda (formerly used as a substitute for oatmeal and for fattening calves)
- Pilth - small balls found in over-rubbed cotton
- Pisky - pixie
- Planching/Planchen - a wooden or planked floor
- Platt - market place (e.g. The Platt at Wadebridge)
- Pol - (a place-name element) pool or inlet (from Cornish language pol)
- Porth - (a place-name element) cove or bay (from Cornish language porth)
- Praze - (a place-name element) meadow or common (from Cornish language pras)
- Proper - satisfactory; "proper job"
Read more about this topic: List Of Cornish Dialect Words