The BBC (4)
I believe the answer is:
beeb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">the bbc</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for beeb that I've seen before include "Informally, the British broadcasting service" , "BBC (colloq" , "Auntie (slang, palindrome)" , "BBC (informally)" , "BBC, familiarly" .)