What's the difference between i.e. and e.g.?
The useless, dreary, or extreme end of something: The fag ends of my days are irretrievably grungy
[1622+; origin uncertain; one early sense of fag was ''end, dragging end,'' and in the earliest dated example fag end means ''ass end''; later use influenced by fag, ''cigarette, cigarette butt,'' found by 1888]