This is the 596th most frequent Malay word.
kulit
Skin.
The usage of 'kulit' here refers to a cover, specifically of a book.
Kulit buku ini sangat cantik.
The cover of this book is very beautiful.
In this context, 'kulit' refers to human skin.
Dia mempunyai kulit yang sangat bersih.
She has very clear skin.
Here, 'kulit' denotes the peel of a fruit, specifically an orange.