To Soak
To Steep, To Dip In, To Pickle
transitive verb, ichidan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means pickle or soak, so the verb version is to pickle or to soak.
つける
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You learned this reading with the kanji. Good for you!
こうやって醤油に漬けて食べてください。
Please eat it dipped in soy sauce like this.