Improve Downcomer meaning in Urdu

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

گرنے والا

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

گرنے والا

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