piled up high; in a heap
Describes things stacked or accumulated to a great height, often with a sense of disorder or abundance.
See also: うず高い
Documents are piled up high on the desk.
Fallen leaves had piled up in a heap.
Common mixed kana-kanji spelling; usually written in kana.
Rare kanji spelling; the kanji 堆 is not commonly used for this word.
The exact derivation is uncertain; the word is conventionally associated with the kanji 堆, meaning 'heap' or 'pile'.