This is the 17176th most frequent Russian word.
стирке
"Стирке" means "laundry" or "washing."
In this sentence, 'стирке' is used in the dative case to indicate the purpose associated with washing or laundry activities.
Я всегда пользуюсь специальным порошком для стирке.
I always use a special detergent for washing.
Here, 'стирке' appears in the instrumental case, emphasizing the action or activity preceding the washing process.
Перед стиркой я сортирую одежду по цветам.
Before washing, I sort clothes by colors.
In this sentence, 'стирке' is used to describe the intended function of the washing machine, relating to the process of washing or laundry work.