English: PiP
Welsh: Prisio'r Post yn ôl Maint a Phwysau
Subject: Trafnidiaeth
English definition: Pricing in Proportion. On 21 August 2006, Royal Mail introduced PiP. While the current system is based only on the weight of your items, the new system will be based on both size and weight.
Welsh definition: Gellid hepgor 'a phwysau'.
Welsh context: Term Llais Defnyddwyr Cymru.