cord binding on hilt of sword
緱 refers specifically to a cord wrapped around the hilt of a sword, likely for grip or decoration.
緱 combines 糸 (thread) with 侯, which likely contributes the sound. The character is used for a cord on a sword hilt, but the exact historical development is uncertain.
The left side 糸 is thread, and the right side 侯 looks like a nobleman. Picture a nobleman's sword with a silk cord wrapped around the hilt.
For コウ, imagine a cord wrapping around the hilt in a tight coil: coil -> コウ.