brawn 
(brôn)
(brôn)n.
1. Solid and well-developed muscles, especially of the arms and legs.
2. Muscular strength and power.
3. Chiefly British The meat of a boar.
4. Headcheese.
[Middle English, muscle, from Old French braon, meat, of Germanic origin; see bhreu- in the Appendix of Indo-European roots.]