Telegraphs wife and son, containing anger (5)
I believe the answer is:
wires
'telegraphs' is the definition.
(I know this)
'wife and son containing anger' is the wordplay.
'wife' becomes 'w' (abbreviation).
'and' is a charade indicator (letters next to each other).
'son' becomes 's' (genealogical abbreviation for son).
'containing' means one lot of letters goes inside another.
'anger' becomes 'ire' (ire is intense rage).
'w'+'s'='ws'
'ws' enclosing 'ire' is 'WIRES'.
(Other definitions for wires that I've seen before include "Metal strands" , "Metal threads" , "Cables; telegrams" .)