The most common and most likely answer to this crossword clue is the 4 plus 5 plus 5 letter word DEAD MEN’S SHOES
I've seen this crossword clue in The Guardian
D
E
A
D
M
E
N
â
€
™
S
S
H
O
E
S
Buddy explains!
The straight part
We know that "these" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case these = dead men’s shoes.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.