Did jam start off as Bunter's favourite? (4)
I believe the answer is:
tuck
'favourite?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for tuck that I've seen before include "Fold into small space" , "Fold - friar!" , "Stitched fold; food" , "Friar of Sherwood" , "Eats" .)