In The Name of Allaah, The Most Merciful, The Bestower of Mercy
Qaadhi Iyaad (rahimahullaah) stated that the word ‘’Waylun‘’ (Woe) has some of the following meanings:
 It is used whilst refering to one who has fallen into destruction.
 It is used whilst refering to one who deserves destruction.
 It is used to refer to destruction itself.
 It is used to refer to the difficulty found in punishment
 It is used to refer to grief
 It is used to refer to a valley in the hell fire.
[Source: Quoted by Shaikh Abdullaah Al-Bukhaari in Sharh Umdatul Ahkaam: lesson 2]
Abu Mu-aawiyyah (Abdullaah Al-Gambi)