evener
eve-ner
noun
A device or person that makes something level, smooth, or balanced.
"This machine acts as an evener for the fabric."
adjective
More level, smooth, or regular in surface, quality, or distribution.
"The new road surface is much evener now."
Thesaurus
Synonyms: even, straight, flat-bottomed, plane, straight-grained, flatbottomed, flat, flat-bottom, level, justified, flatbottom, flush