Dross is usually a term to describe the surface residue of metals such as silver or gold ; also can be of mind or body.
Imagine a cool autumn day with a clear bright blue sky and wisps of white fluffy clouds. You take in a slow deep breath and feel a sense of inner warmth and enjoyment. Compare that to a gray drizzle on cold day with thick clouds covering any thought of sunshine. Feels different, right?
In both cases the outside circumstance affected your inside thoughts, sensations and feelings. However, where do these thoughts, sensations and feelings actually originate?
Are they from outside in or possibly from inside out? You have most likely experienced getting up feeling great (before you looked outside) and then having a “dancing in the rain” day.
The inside “dancing” may be covered over by dross. The dross being the residue or echoes of past or future contemplations of the mind. Just as silver and gold can be polished the dross of mind and body can be dropped, wiped off, evaporated, cleaned, sanded, smoothed, let go of, forgotten or just resolved.
Consider this: Your mind is continually tossing out thoughts for your consideration. Some of these thoughts are sticky and they keep repeating creating more dross. At the same time your heart is radiating love and happiness. If the dross of your mind in heavier than the love and happiness the dross wins and you feel crummy.
However, with meditation you can focus the thoughts of your mind on the breath. This temporarily stops the thoughts creating dross to be present. When the thoughts which create dross are absent the love and happiness radiating from the heart can be felt.
The more you can reduce or temporarily drop the thoughts in your mind that are creating dross by directing your mind to something neutral the more your heart muscle of love and happiness can build up their luscious waves. You might even be able to store the extra ones in a heart battery.
Spiritual Gravity 