Ac is the long vowel 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 is the rune of faithfulness, fidelity, endurance, constancy, and experience. Because of these, it is also a rune of healing and health, giving strength and aid to see to the return of health. It has recently come to my understanding the Ac figures well in love spells, especially when the fidelity of partners is desired or in question. No matter what your arrangement may be, it helps to keep people staying together and abiding by their promises. It feels to me that this rune comes about after a period of great instability and uncertainty, and helps to restore a sense of the calm and stability with it.