Definitions

1. verb

to remove grain from (a surface, especially a wood surface)

“The carpenter had to ungrain the wood to create a smooth finish.”

2. verb

to make (a surface) smooth by removing grain or texture

“The planer was used to ungrain the wooden floor.”

3. noun

a substance, especially a powder, that is not grainy or granular

“The ungrain of the face powder made it suitable for applying a smooth layer.”