To Deposit
To Entrust, To Leave Something With Someone
transitive verb, ichidan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means deposit so the verb vocab version is to deposit or to entrust.
You use 預ける when you leave something in someone else's care for a while, expecting to get it back. For example, you can use 預ける when you deposit money in a bank, leave your coat in a cloakroom, or even when you park your bicycle in a parking area. You can also use it when you leave your child with grandparents or leave your dog at a pet hotel.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you:
In terms of places where you want to deposit your money, the last place on your list should be a zoo (あず). I mean seriously, you know the animals are just gonna munch up all your dolla bills.
え？今、いくら預けたって言った？
What? You deposited how much?