This is the 13006th most frequent Russian word.
лыжах
"Лыжах" means "skis" (prepositional case, plural) in English.
In this sentence, 'лыжах' refers to the skis as equipment used in the activity of skiing.
Я катаюсь на лыжах каждую зиму.
I ski every winter.
Here, 'лыжах' denotes specific skis that the speaker used in the past.
На этих лыжах я катался ещё в детстве.
I used these skis back in my childhood.
In this sentence, 'лыжах' highlights the use of skis as a means of transportation on snow.