brazen (adj.) 2
made of brass, very strong, powerful
2H6 III.ii.89 [Queen to King, of the god of winds] he that loosed them forth their brazen caves
E3 V.i.135 [Salisbury to King Edward, of the army surrounding Prince Edward] every barricado's open front / Was thick embossed with brazen ordinance
Ham I.i.73 [Marcellus to Horatio and Barnardo, of the activities in Denmark] such daily cast of brazen cannon