Neck
noun
The kanji and the word are exactly the same. That means they share meanings as well.
くび
You learned the reading for this word via the kanji, so you should be able to read this word just fine.
首のストレッチをしましょう。
Let's stretch your neck.
キリンは首が長いです。
Giraffes have a long neck.
母は、いつも首にスカーフをつけています。
My mother always wears a scarf around her neck.