thin beard
n.β Β«In boxing parlance, having a “thin beard” means a fighter is not able to shake off a hard shot to the jaw. It means heβs more than a little susceptible to being knocked out.Β» ββJones wants revenge vs. Tarver” by Bernard Fernandez in Tampa Philadelphia Daily News (Pa.) Sept. 30, 2005. (source: Double-Tongued Dictionary)