պրակ

Etymology
From.

Noun

 * 1) fascicle a separately published installment of a book or other printed work
 * 2)  printer's sheet

Etymology 1
From.

Noun

 * 1)  acts
 * 2)  chapter, paragraph
 * 1)  chapter, paragraph
 * 1)  chapter, paragraph

Usage notes
Always used in the plural.