To part; to separate; to divide; to disunite in almost any manner, either by rending, cutting, or breaking; as, to sunder a rope or cord; to sunder a limb or joint; to sunder friends, or the ties of friendship. The executioner sunders the head from the body at a stroke. A mountain may be sundered by an earthquake. Bring me lightning, give me thunder; . --Jove may kill, but ne’er shall sunder.

To expose to the sun.

In sunder, in tow. He cutteth the spear in sunder. Psalm 46:9.