Hide:
(1) The outer covering of a mature or fully grown large mammal, e.g. cattle, horse, camel, elephant and whale.
(2) Leather made from (1) which has not been split, or from the grain split of such hide; when used in this way the name of the animal e.g. cowhide or oxhide or the type of leather, e.g. bag hide or case hide may be added .

Hide Split:
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", or the part of the animal whence it comes, is included in the description then the word "split" in this sense, must be used as a noun, e.g. pig split, hide split, butt split. The word "split" must not be used as an adjective unless the grain layer is described as in "split pigskin".

Leather:
Hide or skin which still retains its original fibrous structure more or less intact, and which has been treated so as to be imputrescible even after exposure to water. The hair or wool may or may not have been removed. Certain skins, similarly treated or dressed, and without the hair removed, are termed "fur". Note: No product is described correctly as "leather" if its manufacture involves breaking down the original skin structure into fibres, powder or other fragments by chemical or mechanical methods and reconstituting these fragments into sheets or other forms.

Lime Split:
Leather that has been split into two or more layers in the pre-tanned state (limed state).

Metallized Leather:
Leather given a metallic lustre by the application of metallic foils or powders.

Mineral Tanned:
Leather that has been tanned with mineral salts such as aluminium, chromium or zirconium salts.

Morocco:
(1) Vegetable tanned goat skin leather with characteristic grain pattern developed naturally or by hand boarding or graining only. The commonest and most characteristic grain is hard grain.
(2) By long usage, especially in the fancy goods trade. Goatskin of any vegetable tannage that has been hand boarded in the damp condition, but in the strict sense it should be limited to goatskin tanned exclusively with sumac.

Nappa:
Soft full grain gloving or clothing leather made from unsplit sheep or lambskin or kid-skin. It is usually tanned with alum and chromium salts and dyed throughout its substance.

Nubuck:
Cattle hide leather buffed on the grain side to give a velvety surface; white or coloured.

Oak Bark Tanned:
A light-weighing, unbleached, bark tanned leather, which has been pit tanned at ambient temperature for not less than five to six months by a process embodying layering for not less than three months, oak bark being employed as a basis of tannage.

Parchment:
Translucent or opaque material with a smooth surface suitable for writing, bookbinding and other purposes. It is made from the flesh split of sheep, ass or goatskin, by drying out the limited material without applying any tannage. The material being thoroughly cleansed and degreased and smoothed during the process. Generally the flesh split of a sheepskin.

Patent Leather:
Leather, one surface of which is covered with an integral, flexible, waterproof film which has a lustrous mirror-like surface. This coating was formerly built up by the application of various daubs, varnishes and lacquers, pigmented or non-pigmented, based on linseed oil. Today these may include nitro-cellulose and/or synthetic resins. Laminates coated with a plastics film less than 0.15mm thick may also be classed as "patent leather" .

Pearlized Leather:
Coloured leather with a pearl-like lustre. Pearlescent Leather Coloured leather with a pearl-like lustre.

Pigment Finish:
Leather to whose surface a finish containing fine pigment particles in suspension has been applied.

Print:
A patterned design applied to the grain surface of the leather.

Printed Leather:
Leather, bearing a surface pattern, produced usually by embossing, but sometimes by other methods, e.g. by silkscreen printing .

Protected Leather:
Leather in which certain special chemicals have been incorporated to render it less liable to deterioration through exposure to polluted atmospheres. The treatment is often applied to vegetable tanned upholstery and bookbinding leathers.