1. An ironic thank you
   - thanks a lot 
2. An emphasized thank you
   - many thanks, thanks a lot

Encyclopedia: Thanks a million

• poussette
• Poussin
• pout
• pouter
• pouter pigeon
• Pouteria
• Pouteria campechiana nervosa
• Pouteria zapota
• poutine
• poutingly
• pouty
• poverty
• poverty grass
• poverty level
• poverty line
• poverty trap
• poverty-stricken
• POW
• POW camp
• powder
• powder and shot
• powder blue
• powder compact
• powder flask
• powder horn