Webster's Revised Unabridged Dictionary · 1913

Brog

Brog (brog) , noun

[Gael. Compare Brob.]

A pointed instrument, as a joiner's awl, a brad awl, a needle, or a small sharp stick.

Brog , transitive verb

To prod with a pointed instrument, as a lance; also, to broggle. [Scottish & Prov.] — Sir W. Scott