Frequency: The word is one of the 3000 most common words in English.
1.
~ is written before a person’s name at the bottom of a formal or business letter in order to indicate that they have signed the letter on behalf of the person whose name a~ears before theirs. (BUSINESS)
...J.R. Adams, ~ D. Philips.
2.
~. is the plural of ‘p.’ and means ‘pages’. (WRITTEN)
See chapter 6, ~. 137-41.