The most common and most likely answer to this crossword clue is the 10 plus 6 letter word MIDDLE-AGE SPREAD
I've seen this crossword clue in Independent
M
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D
D
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A
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D
More clues leading to the result MIDDLE-AGE SPREAD
- Form-filling associated with the pre-60s?
- After distance driven carrying theologian, padre’s changing spare tyre
- Page to study, when understanding former time period has caused unwanted fat
- . Some time in the past, padre blessed breadbasket
- A source of extra heft a long time ago – before the Christian Era?
- Waist problem Papa studied after a historical period
- Expanding corporation merged, deals paid off
- Spare tyre limp — grease added for repair
- New slide made GP study distribution in later life
Buddy explains!
The straight part
We know that "A source of extra heft" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case a source of extra heft = middle-age spread.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.