Webster's Revised Unabridged Dictionary · 1913

Brooch

Brooch (brōch; 277) , noun

[See Broach, n.]

1.
An ornament, in various forms, with a tongue, pin, or loop for attaching it to a garment; now worn at the breast by women; a breastpin. Formerly worn by men on the hat.
Honor 's a good brooch to wear in a man's hat. — B. Jonson
2.
(Painting) A painting all of one color, as a sepia painting, or an India painting.

Brooch (brōcht) , transitive verb

[imp. & p. p. Brooched (brōcht).]

To adorn as with a brooch. [Rare]