Note 355 — ACT III.
Reading edition
Similar to this expression is chap-fallen, still used by the vulgar. In Beaumont and Fletcher's "Mad Lover," act ii., Calis says his palate's down, which seems to have the same signification.
It will be seen by the following quotation from Webster's "Appius and Virginia," 4to, 1654, that brawn-fall'n is something different from what Reed has described it—
"Let Th' enemies stript arm have his crimson'd brawns Up to the elbowes in your traitorous blood."—Page 9.