Raw Hide:
(1) A hide which has only been treated to preserve it prior to tanning.
(2) Translucent material made from the whole substance (for industrial applications, principally in the textile industry) or the grain split (for luggage) of bovine hide freed from the hair and epidermal and flesh layers and dried out in the limed state, usually without any tanning process being applied. When used for luggage purposes the surface is usually varnished to give protection from moisture.

Retanned:
Leather which has been subjected to an additional tannage with similar or other tanning materials.

Rough Tanned Leather:
Leather which after tanning has not been further processed but has been merely dried out. The term "rough canned" is used chiefly in connection with vegetable tanned hide leathers, e.g. "rough tanned strap".

Russet Leather:
Originally unfinished vegetable tanned cattle hide leather which has been dressed ready for staining or finishing but the leather may now be combination or chrome tanned. Sometimes termed "skirt leather".

Shadow Finish:
Shading of certain parts of the leather in footwear and other leather products, usually by the manufacturer.

Shrunk(en) Grain:
Leather specially tanned so as to shrink the grain layer and having a grain surface of uneven folds and valleys. Sometimes called "drawn grain".

Skin:
(1) General. The outer covering of an animal.
(2) In the strict sense. The outer covering of small mammals and other vertebrates, e.g. sheep and goats; or of the immature animal of the larger species, e.g. calves and colts. Used in relation to pigs, reptiles, birds and fish.
(3) Leather, made from (1) and (2) which has not been split.
(4) The outer covering of a fur-bearing animal dressed and finished with the hair on.

Skiver:
The tanned outer or grain split of a sheep or lambskin. Sometimes applied to goatskin.

Snuffed Leather:
Leather which the top surface of the grain has been removed, usually through a process of abrasion. (See also corrected, buffed, fluffed) .

Split:
(1) A single layer from a hide or skin that has been separated over its whole area into two or more layers. The layers thus obtained are termed: (a) grain split (outer split) ; (b) flesh split (inner split) ; (c) in heavy hides there can also be a middle split.
(2) Leather made from the flesh split or middle split. Note: If the name of the animal whence it originates,or the word "hide" or "skin" , is included in the description, then the word "split" , in this sense, must be used as a noun, e.g. pig split, butt split. The word "split" must not be used as an adjective, unless the grain layer is described as in "split pigskin".

Split Hide (see Hide Split):
(1) The outer (hair or grain) layer of a hide from which the under or flesh side has been split to give it a reasonably uniform thickness. (2) Leather made from (1) . Originally vegetable or combination tanned, now also chrome tanned. The leather is dressed according to the purpose required, e.g. upholstery, luggage, bags.

Suede:
(1) Velvet-like nap finish produced on leather by abrasive action.
(2) Leather whose wearing surface has been finished to have a velvet-like nap.

Suede Split:
Leather made from the flesh split of hide or skin and finished with a velvet-like nap normally on the split surface.