Definitions

1. verb

past participle of rosine, to treat with rosin, to make slippery or greasy

“The old wooden floor was unrosined after years of being left untouched.”

2. adjective

not coated or treated with rosin

“The unrosined strings of the violin were difficult to play.”

3. noun

a surface or object that has been treated with rosin and is now unrosined

“The unrosined section of the road was slippery with ice.”