Left Direction, Left
noun, の adjective
The kanji and the word are exactly the same. That means they share meanings as well.
ひだり
Since this word is made up of a single kanji, it uses the kun'yomi reading. You haven't learned this reading yet, so here's a mnemonic to help you: Imagine hearing someone to your left saying, "Hi Da'ri!" (ひだり) which is supposed to be "Hi There," or "Hi Dearie." You turn left and there's no one there. You hear it again, "Hi Da'ri!" Keep turning to the left until you find the person saying hi to you.
左目のコンタクトレンズがない。
The left contact lens is missing.
わたしは、左ききです。
I’m left-handed.
入り口は左のドアですよ。
The entrance is the door on your left.