Related Clues:

• Tissue thickness unit
• Two-___ toilet paper
• Word on a Charmin package
• Paperboard thickness
• Laminated layer
• It's not what the P stands for in TP (unless the T is 'two'?)
• Thin sheet covering organs
• Cell's outer covering
• Paper layer
• Wood layer
• Paper tissue layer
• Bath tissue layer
• Layer of fibre in widely shared image
• Engage in, as a trade
• Toilet paper unit