This is the 14072nd most frequent Korean word.
머리채를
"머리채를" means "hair," particularly referring to the long hair or locks on the head, often used in contexts implying grabbing or pulling.
'머리채를' here is used to describe the physical impact on the hair by the waves.
파도가 몰아치며 그의 머리채를 적셨다.
The waves crashed, soaking his hair.
As a noun phrase '머리채를' refers to 'head of hair' as an object being acted upon.
그녀는 그의 머리채를 잡아당기며 화를 냈다.
She grabbed his hair angrily and yelled.
Here '머리채를' describes the visual effect of the hair being influenced by the wind.