Printing And Publishing Jargon

noun a flat paper container with a sealable flap, used to enclose a letter or document

• Please remember to seal the envelope before mailing it.
• Don't forget to lick the envelope shut before you send it out.
• I'll just stick the letter in the envelope and call it a day.
• Her emotions were like a sealed envelope, hidden from everyone else.

noun a book in physical form, as opposed to an e-book

• The university library still carries a collection of p-books for students to borrow.
• I prefer reading p-books over e-books because I like the feel of paper in my hands.
• I found a great deal on some old p-books at the thrift store.
• Her mind was like a p-book, full of stories waiting to be discovered.