Ac is the long a sound “ah”
Anglo-Saxon Rune Poem (from ragweedforge.com)
The oak fattens the flesh of pigs for the children of men.
Often it traverses the gannet’s bath,and the ocean proves whether the oak keeps faithin honourable fashion.
Ac, the oak tree, the rune of endurance, longevity, stability, fidelity and faithfulness is the rune for this Sunday. It indicates that the day will probably be smooth and even in nature, without much disturbance, and what few arise will be handled easily and simply. There is a certain rooted inertia to this rune, that whatever direction or action one is taking, one will continue to act and follow through with that action, as the energy, (or lack thereof depending upon the factors at work) will be steady and available to meet your needs. Keep youself grounded and stable, so that the energy doesn’t overwhelm you.