Pass by one with Sherlock Holmes initially (6)
I believe the answer is:
perish
'pass' is the definition.
(I've seen this before)
'one with sherlock holmes initially' is the wordplay.
'one with' means one lot of letters go next to another.
'sherlock' becomes 'peris' (I can't explain this - if you can you should believe this answer much more).
'initially' indicates taking the first letters.
The initial letter of 'holmes' is 'h'.
'peris' put next to 'h' is 'PERISH'.
'by' acts as a link.
Can you help me to learn more?
(Other definitions for perish that I've seen before include "Die - rot" , "Expire" , "come to grief" , "Die; decay" , "Suffer complete ruin or destruction" .)