Heavyweight broadcasters? (7)
I believe the answer is:
anchors
'broadcasters?' is the definition.
(I know this)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for anchors that I've seen before include "They chain ships to the bottom" , "Heavy security devices" , "stabilising influences" , "Firmly fixes" , "They prevent vessels from moving" .)