“tie / bind” in Japanese is 結, read ketsu, musu (けつ, むす). It is a Grade 4 Kyōiku kanji, taught in year 4 of Japanese elementary school, and appears in words such as 結婚 (marriage).
What does 結 mean?
ひもを結ぶ。
Same sound, different character — the classic trap. Compare them side by side: