Telegraphs (6)
I believe the answer is:
cables
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">telegraphs</span>' is the definition.<br/ ><span class="explanation-format__explanation">('cable' can be a synonym of 'telegraph')</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cables that I've seen before include "Thick wires" , "Thick wire ropes or old telegrams" , "Conductors for transmitting electricity" , "Hawsers" , "Electrical conductors connecting telephones or television, say" .)