Improve Reef knot meaning in Urdu

Is there any meaning of the word reef knot that needs an edit? Please click that meaning to rewrite it.

ریف گرہ

Is there any meaning of the word reef knot that needs to be removed from the list? Please click that meaning to mark it for deletion.

ریف گرہ

Do you want to add a new meaning, definition, and a sentence of the word reef knot? Please feel free to add.