Obs. (See quot.)

1

1688.  R. Holme, Armoury, II. 154/1. The Brills in the hair on the Eye-lids [of a horse].

2

1725.  Bradley, Fam. Dict., II. s.v. Horse, To begin with the Hair…. 5. The Cronet, which is the Hair that grows over the Top of the Hoof. 6. The Brills, being the Hair on the Eye-lids.

3