1. Post Postscript (a postscript following the first postscript) 
2. [Brit] Parliamentary Private Secretary, Principal Private Secretary

Encyclopedia: PPS

• heartleaf manzanita
• heartless
• heartlessly
• heartlessness
• heartrending
• heartrot
• hearts
• heartsease
• heartseed
• heartsick
• heartsickness
• heartstrings
• heartthrob
• heartwarming
• heartwood
• hearty
• heat
• heat barrier
• heat capacity
• heat content
• heat death
• heat dissipation
• heat energy
• heat engine
• heat exchanger