fencing wire
noun1
A thick, tough, durable, rust-resistant wire designed to be strung between fence posts to form fences in rural settings.
- They camped that night at Dingo Creek, the fire Jim quickly made, Put the Billy on the cross-piece, pitched the tent, Brought a steak from 'neath the saddle-flap, and on the "grid" 'twas laid, A piece of rusty fencing wire, well bent.1897 October 10, The Truth, Sydney, page 8, column 3: