资料来源 : Webster's Revised Unabridged Dictionary (1913)

Metal \Met"al\, v. t. [imp. & p. p. {Metaled} (? or ?) or
   {Metalled}; p. pr. & vb. n. {Metaling} or {Metalling}.]
   To cover with metal; as, to metal a ship's bottom; to metal a
   road.