(1):

(v. i.) To be diminished; to decrease; - contrasted with wax, and especially applied to the illuminated part of the moon.

(2):

(n.) Decline; failure; diminution; decrease; declension.

(3):

(v. i.) To decline; to fail; to sink.

(4):

(v. t.) To cause to decrease.

(5):

(n.) An inequality in a board.

(6):

(n.) The natural curvature of a log or of the edge of a board sawed from a log.

(7):

(n.) The decrease of the illuminated part of the moon to the eye of a spectator.