Of a sword, blade, etc.: blunted; dulled. Also in extended use.

Darkened, dimmed; obscured, concealed; = obfuscated, adj.

Partially blind; short-sighted; squinting. Also figurative. Now regional.

figurative. Of the mind: Darkened or obscured (by ignorance, etc.). Of ideas or perception: Obscure, dim, indistinct; mystical.

As if suffering from moon blindness; dim-witted, obtuse; intellectually blind; (occasionally) lunatic. Obsolete.