Don't you think Maria has such a sexy mole on the tip of her left pinky?
Koichi is in the habit of spinning a soccer ball on his fingertip while he's thinking.
My fingertips are getting numb with cold.
You know that previous part of your finger? The part I just chopped off? Well that was your fingertip! I only had time to get the tip. It used to be on your finger and now it's right here, in my hand. Sorry, I guess. Oh, but don't worry, I'll even things out and get the tip of your toe real quick too.
This word uses the kun'yomi readings from both kanji, probably because it includes body parts. You know them both already, so now you know this too!