Looking for a non-crappy way of describing someone doing that washing hand motion you do to clear your hands of dust or dirt, but without saying 'washing hand motion'. I feel like there's a good way of describing it, a stock phrase of some kind, but I can't remember it. Tip of the tongue, and it's driving me mad.
If you mean running one's hands over each other, not when you're washing but when you are distressed or worried that's wringing one's hands
It's a bit archaic but how about Lave?
e.g. She laved her hands.
verb (used with object), laved, lav·ing.
1.to wash; bathe.
2.(of a river, sea, etc.) to flow along, against, or past; wash.
3.Obsolete . to ladle; pour or dip with a ladle.
verb (used without object), laved, lav·ing.
4.Archaic. to bathe.
How about rub/scrub/brush one's hands clean?
He vigorously rubbed his hands clean under the sink water.
Alternately, consider scrub up.
scrub up: (of a surgeon) to wash the hands and arms thoroughly before operating.