Cable

The GBP/USD is called the "Cable" because back in the day---

Investopedia Says:
For example, you may hear someone dealing with the forex market saying, "The cable is up today," or, "The cable has been trending lower lately."

The origins of this term are attributed to the fact that in the 1800s, the dollar/pound sterling exchange rate was transmitted via transatlantic cable.

Forex brokers are sometimes referred to as "cable dealers"


So in Hawaii Trading lingo Cable shall strictly mean the USD/GBP.  

Here is a PRS133 on the cable.   


And below is a smaller version of the same charts, maybe will image better on single monitors.