PE pā (ף, p). The seventeenth letter of the Heb. alphabet. It also was used for the number 80. It introduces the seventeenth part of
International Standard Bible Encyclopedia (1915)
"p": The 17th letter of the Hebrew alphabet; transliterated in this Encyclopedia as "p" with daghesh and "ph" (equals f) without. It came also to be used for the number 80. For name, etc., see Alphabet.