MARC - the grapes contained in the wine press and the residue, as skins and pips, remaining after the juice is expressed. In France, they make a brandy from this residue.
You can drink wine in moderation on a low residue diet. A low residue diet aims to lessen the frequency of stools.
Yes White wine is essentially a clear liquid and suitable for low residue diets
A wine press is used to squeeze the juice out of grapes.
Pressing grapes, it was a wine press.
The refuse itself is called pomace. It consists of the non-fruit parts of the grape, like the skins and stems. Fermented pomace goes by various names, such as grappa in Italy and Marc in France.
A machine called a press.
There are many places where someone could purchase a wine press. Websites such as winestock, Bon Ton Stores, Overstock, Norhtern Tool and winepress all sell wine presses.
Red wine vinegar is for cooking/eating while white isn't. There also may be residue with the red wine that you won't get with the white.
In Roman times or possibly earlier.