akh /ɑːk/noun 1/æk/ noun 1forms 1 noun1 •In Egyptian mythology, (roughly) a spirit of the dead that has successfully completed its transition to the afterlife.After spending the night asleep in their tombs, the akhs would wake each morning at sunrise and “come forth from the necropolis” to enjoy an ideal life, free from the cares of physical existence. — 2000 akh /æk/ noun1 •(slang) Brother; a close male friend or associate. formsakhs