Is the butchers' business such an endeavour? (5)
I believe the answer is:
joint
'endeavour?' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'is the butchers' business such an' is the wordplay.
I cannot quite see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
'an' could be 'i' (Roman numeral for one) and 'i' is present in the answer.
The remaining letters 'jon' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for joint that I've seen before include "cigarette with grass" , "Piece of meat for roasting" , "Structure by which bones are fitted together" , "Bone junction" , "Knee is one" .)