Webster's Revised Unabridged Dictionary · 1913

Brawn

Brawn ({not transcribed}) , noun

[Old French braon fleshy part, muscle, from HG. brāto flesh, German braten roast meat; akin to Icelandic br{not transcribed} flesh, food of beasts, Anglo-Saxon br{not transcribed}de roast meat, br{not transcribed}dan to roast, German braten, and possibly to English breed.]

1.
A muscle; flesh. [Obsolete]
Formed well of brawns and of bones. — Chaucer
2.
Full, strong muscles, esp. of the arm or leg, muscular strength; a protuberant muscular part of the body; sometimes, the arm.
Brawn without brains is thine. — Dryden
It was ordained that murderers should be brent on the brawn of the left hand. — E. Hall
And in my vantbrace put this withered brawn. — Shakespeare
3.
The flesh of a boar; also, the salted and prepared flesh of a boar.
The best age for the boar is from two to five years, at which time it is best to geld him, or sell him for brawn. — Mortimer
4.
A boar. [Obsolete] — Beau. & Fl