I used to know the meaning of this word in the context of what I was reading, but I've since forgotten. I remember that it had something to do with the 60-year sexaganary cycle, but I can't recall much more than that.
The word is a part of this phrase:空亡風のマーク, and is describing the hand-shaped marking on the mast of the ship.
Any and all help in understanding this will be greatly appreciated.