Answer:
Six letters do my name compound; among the aged oft I'm found; The shepherd also by the brook hears me when Leaning on his crook; but in the middle me divide and take the half on either side each backward read a liquor tell ev'ry gay toper knows it well.
I have a straight back and sharp teeth to cut objects.
When I come in from sea to shore twenty paces you'll see No less no more.
What is so delicate that saying its name breaks it?
My first is high my second damp my whole a tie a writer's cramp.
What is always coming but never arrives?