"Shayri" is a corruption of "Shayari", which is Urdu for "poetry." So "Sad Shayri" is a corruption of "Sad Shayari".Shayri is poems consisting of at least one couplet or "Sher." Several couplets are grouped to constitute a "Ghazal," which is the most popular of Urdu poetry formats. https://www.shayrisad.in/category/sad-shayari-blog