To remove dirt from a place or object.
Can you clean the windows today?
To tidy up, make a place neat.
Clean your room right now!
To remove equipment from a climbing route after it was previously lead climbed.
To make things clean in general.
She just likes to clean. That’s why I married her.
To remove unnecessary files, etc. from (a directory, etc.).
To brush the ice lightly in front of a moving rock to remove any debris and ensure a correct line; less vigorous than a sweep.
To purge a raw of any blemishes caused by the scanning process such as brown tinting and poor color contrast.
To remove guts and/or scales of a butchered animal.
(gerund of clean) The process of making something clean.
The afterbirth of cows, ewes, etc.