湯垢

湯あか

Reading

Kana: ゆあか

Romaji: yuaka

Definition

noun

1

scale (i.e. hard water coating in a kettle, etc.); fur

Kanji

湯

Readings: トウ、 ゆ

Meanings: hot water, bath, hot spring

垢

Readings: コウ、 ク、 あか、 はじ

Meanings: dirt, grime, earwax

Example Sentence

ボイラは湯(ゆ)あかがびっしりついた。

➥The boiler was heavily scaled.