A "real" moleskin from a mole is incredibly soft, but it would take very many of the little critters to piece together much of anything useful from their fur. I've seen a very few small "coin purses" or other small pouchlike accessories in museums, but they're apparently quite rare.

The commercial "moleskin" is a cloth, napped to make it have a nice soft feel, and in recent times is found mostly with an adhesive backing. The most common use is for padding friction points in footwear. "Moleskin tape" probably is still much used by athletic team "trainers" - the guy/gal with the first aid kit.

For "wear around the house" the "housecoat" term is still used in my area, but more often the apparel is referred to as a "robe" or "bathrobe." There are numerous "foreign names" for items in this general class, typically featuring some odd feature - with/without pockets, attached belts, snaps, buttons, high/low cut, opaque/transparent features, etc., but these names generally are known and used only by "uppity ladies" who noticed the glamourous ads when they bought the item at some "fancy-ass-booteek."

If it was intended that one should be seen "in public" a similar sort of apparel might be called a "wrap," or a "smock," and a few people in retail shops may still wear something of the sort. It's permissible to call it a "smock" if you're a retail tradesperson or female, but males wearing the same apparel in other occupations would likely call it a lab-coat or a shop-coat.

"Britches" is and has been commonly used for "anything that goes over that roundish lower part of the body and has separate parts for each of the legs." "Git yer britches on" just means get clothed.

When referring specifically to those obsolete "knee pants" everyone I ever knew called them unequivocally "breeches," and only that. That pronunciation was used specifically and only for the knee-lengths with a "bloused end" at the knee. I can't recall anyone ever wearing "breeches" in public, except on a golf course or in a "period drama" presentation.

A very few of the elders appeared to know more specific names for "styles" of breeches, but these kinds of clothing were so seldom seen after about 1900(?) that few of my parents generation or later made any such distinctions. "Knickers" probably is/was in this category in the central US. Some of these old names were apparently known and used later, particularly in "back-East" areas where "ancient and traditional" school uniforms were more common.

John