barken /ˈbɑː(ɹ)kən/verb 2adjective 1forms 3 verb2 •(dialect, UK) To become hard or form a crust, like bark.The poor patient knew at once his master's tongue, and lifting up one of his eyes, the other being stiff and barkened down, said in a melancholy voice, "Ah, master, do you think I'll get better?" — 1828 •(dialect, UK) To tan or dye with bark. adjective1 •(literary) Made of bark.barken knots — 1871 formsbarkened · barkening · barkens