They take orders in nameless novel (8)
I believe the answer is:
salesmen
'they take orders' is the definition.
The definition suggests an adverb but the answer is not.
'nameless novel' is the wordplay.
'novel' is an anagram indicator (letters in a new or novel order).
'nameless' with letters rearranged gives 'SALESMEN'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for salesmen that I've seen before include "representatives" , "traders" , "They sell goods and services" , "People engaged in trade" .)