Beaten by Noah's son and only daughter (8)
I believe the answer is:
hammered
'beaten' is the definition.
(hammering is a kind of beating)
'noah's son and only daughter' is the wordplay.
'noah's son' becomes 'ham' (I've seen this in another clue).
'and' says to put letters next to each other.
'only' becomes 'mere' (I've seen this before).
'daughter' becomes 'd' (genealogical abbreviation).
'ham'+'mere'+'d'='HAMMERED'
'by' is the link.
(Other definitions for hammered that I've seen before include "Beat hollow" , "Thoroughly beaten (colloq.)" , "Hit hard" , "Hit with a hand tool with heavy rigid head and handle" , "Pounded with heavy implement" .)