Here's one definition from Dictionary.com:
a lock or tuft of wool, hair, cotton, etc.
In this case the word is related to flocking, such as used for a stuffing.
It's a fairly recent word; it's what's called "New Latin" since it's a wincingly painful cognate /derived word from Latin
floccule.
It's an eighteenth century creation.
This is one of those words that, when I see it, I snicker because someone probably used a thesaurus and has never heretofore used the word in his or her life.
It's the kind of thing students do all the time. I know more than I should about this flock because it's cognate with floccinaucical (see signature).
The other word, flock, as in sheep or birds, is a lot more interesting because it belongs to a special class of old words referring to groups of animals, and sometimes, people.
