Boiled water can be at any temperature below boiling point, but it must have been boiled. Boiling water is water at 100 deg C at sea level. Better to say that it is water that is boiling - releasing bubbles of steam.
"Sterilize the handle in boiling water."
Although that seems a very strange thing to do, and I can't quite visualize how that would work out. When I can fruits and vegetables I sterilize the lids in boiling water before I put them on top of the jars.