How do you spell Waning

Available Definitions:
1)  n. - The act or process of waning, or decreasing.
2)  v. i. - To decline; to fail; to sink.
3)  v. t. - To cause to decrease.
4)  n. - The decrease of the illuminated part of the moon to the eye of a spectator.
5)  n. - Decline; failure; diminution; decrease; declension.
6)  n. - An inequality in a board.