Finger
Toe
noun
The kanji and the word are almost exactly the same. The only difference is that this word can mean finger or toe. What are toes but small, walking fingers?
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You did not learn this reading, so here's a mnemonic to help you to remember:
What do you use your finger for the most? For pointing, of course! Imagine going up to people and saying, "What will you be (ゆび) when you grow up?" Point your finger at the next person, "What will you be?" Keep going until you're just saying, "You be? You be?" with your finger out.
指がきれいですね。
You have such beautiful fingers.
なんで手の指も足の指も五本なんだろう？
Why do we have five fingers and also five toes?
中指がいきなりいたくなったんだけど。
My middle finger just started hurting all of a sudden.
指切りしたんだから、わすれないでね！
We pinky promised, so don't forget!