dBW

This is decibels with respect to 1 watt of power.
Found on http://www.coseti.org/glossary.htm

dBW

Decibels rated above or below 1 Watt
Found on http://www.encyclo.co.uk/visitor-contributions.php

dBW

decibels referred to 1 Watt
Found on http://www.encyclo.co.uk/visitor-contributions.php
No exact match found