This is the 17231st most frequent Russian word.
стряхнув
"Стряхнув" means "having shaken off."
streahknuv is used here to mean the action of removing or getting rid of something (dust) by motion.
Он быстро пошел дальше, стряхнув с грязной обуви пыль.
He quickly moved on, shaking off the dust from his dirty shoes.
streahknuv is employed metaphorically to describe the mental or emotional action of releasing fatigue.
Написав последние строки письма, он положил ручку на стол, стряхнув усталость с плеч.
After writing the last lines of the letter, he placed the pen on the table, shaking off tiredness from his shoulders.
streahknuv is utilized to signify the physical action of removing something (raindrops) by a shaking motion.