Crime boss and criminal lad avoid Pluto's friend (6,4)
I believe the answer is:
donald duck
'pluto's friend' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'crime boss and criminal lad avoid' is the wordplay.
'crime boss' becomes 'don' (person of authority in the mafia).
'and' says to put letters next to each other.
'criminal' indicates an anagram.
'avoid' becomes 'duck' (duck can mean to avoid).
'lad' with letters rearranged gives 'ald'.
'don'+'ald'+'duck'='DONALD DUCK'
Can you help me to learn more?
(Other definitions for donald duck that I've seen before include "bird apparently brought to life" , "Screen favourite" , "Walt Disney character" , "would be a figure of fun" , "Disney cartoon character" .)