evener

1. comparativecomparative form of even: more even

   I prefer the white pine, because it is less liable to gutter with the rain, and makes an evener roof.

   1853, Samuel Strickland, Twenty-Seven Years in Canada West

plural eveners

1. One who, or that which, makes even.

   Hers is not simply a plea for the value of tragedy, for that awareness of death which increases incentives for life; it is rather a negative use of death as the great leveler, the evener of scores.

   1966, Wilfred Healey Stone, The Cave and the Mountain: A Study of E. M. Forster, page 254

2. datedIn vehicles, a swinging crossbar, to the ends of which other crossbars, or whiffletrees, are hung, to equalize the draught when two or three horses are used abreast.
3. A raddle (instrument used by weavers).