A soil leveller is used to prepare the field before sowing.
noun A device used to stabilize wobbly tables, chair legs, or other furniture.
I adjusted the leveller built into each leg of the table, but it still wobbled.
noun Something that transcends people’s differences (such as social class, wealth, etc.); something that tends to eliminate advantages and disadvantages.
noun A person holding a political opinion in favor of eliminating disparities between the haves and the have-nots.