5101.11 - Shorn wool:

This HTS subcategory, 5101.11, specifically covers shorn wool that is still in its greasy state, including wool that has undergone fleece washing. This means the wool has not yet been scoured to remove natural grease, dirt, and other impurities. The term "greasy" is a key differentiator, indicating the presence of lanolin, which is characteristic of wool in its rawest, freshly shorn form.

The sibling category, 5101.19, encompasses "Other" greasy wool, implying that 5101.11 captures a specific subset of greasy wool. While 5101.11 focuses on the initial state of the wool as shorn or fleece-washed, 5101.19 would likely cover other forms of greasy wool not specifically falling under the direct shorn or fleece-washed definition, or perhaps variations in processing prior to scouring that still retain significant grease.

Within this greasy wool classification, the next level of detail is provided by subcategories. Specifically, there's a subdivision for unimproved wool and other wool not finer than 46s, and a further subcategory designated as "Other" (5101.11.60). These subdivisions likely address finer distinctions in wool quality, staple length, or processing nuances that influence its classification and subsequent use.