Frank had nuts distributed - that's easily solved (4-3-4)
I believe the answer is:
open-and-shut
'easily solved' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives sometimes mean the same thing.
'frank had nuts distributed' is the wordplay.
'frank' becomes 'open' (synonyms).
'distributed' is an anagram indicator.
'had'+'nuts'='hadnuts'
'hadnuts' with letters rearranged gives 'andshut'.
'open'+'andshut'='OPEN-AND-SHUT'
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for open-and-shut that I've seen before include "Straightforward" , "No nude paths (anag) - easily decided" , "So obvious as to be easily decided" .)