Webster's Revised Unabridged Dictionary · 1913

Coif

Coif (koif or kwaf) , noun

[Old French coife, French coiffe, Late Latin cofea, cuphia, from Old High German kuppa, kuppha, miter, perh. from Latin cupa tub. See Cup, n.; but compare also Cop, Cuff the article of dress, Quoif, n.]

1.
A cap.
(a)
A close-fitting cap covering the sides of the head, like a small hood without a cape.
(b)
An official headdress, such as that worn by certain judges in England.
From point and saucy ermine down To the plain coif and russet gown. — H. Brocke
The judges,... althout they are not of the first magnitude, nor need be of the degree of the coif, yet are they considerable. — Bacon
2.

Coif (koif or kwaf) , transitive verb

[Compare French coiffer.]

To cover or dress with, or as with, a coif.
And coif me, where I'm bald, with flowers. — J. G. Cooper