PAP (Heb. shadh, Gr. mastos, bulging). An English word, now obsolete, that has been replaced by the word “breast,” e.g., in RSV (Luke.11.27; Rev.1.13, niv “chest”).
PAP. Obsolete word for Breast.
International Standard Bible Encyclopedia (1915)
(shadh, shodh, "breast" (Eze 23:21); mastos, "the breast" (Lu 11:27; 23:29; Re 1:13)): The English word, which goes back to Middle English "pappe" (see Skeat, Concise Etymological Dictionary of the English Language, 327) and is now obsolete, has been replaced in the (British and American) by "breast." The Hebrew word signifies the "female breast"; the Greek word has a wider signification, including the male chest.