/bray"kee euhm, brak"ee-/ , n. , pl. brachia /bray"kee euh, brak"ee euh/ .
1. Anat. the part of the arm from the shoulder to the elbow.
2. the corresponding part of any limb, as in the wing of a bird.
3. an armlike part or process.
[ 1725-35; brac ( c ) hium the arm; cf. Gk brachíon, formally the comp. of brachýs short ]