The most common and most likely answer to this crossword clue is the 14 letter word DEMONSTRATIONS
I've seen this crossword clue in Independent
D
E
M
O
N
S
T
R
A
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I
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Buddy explains!
The straight part
We know that "Shows" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case shows = demonstrations.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.
What does DEMONSTRATIONS mean?
DEMONSTRATIONS noun- The act of demonstrating; showing or explaining something.
- An event at which something will be demonstrated.
- Expression of one's feelings by outward signs.
- A public display of group opinion, such as a protest march.
- A show of military force.
- A mathematical proof.