March slightly lacking in recollection of spring, for comparison (8)
I believe the answer is:
parallel
'march' is the definition.
(thesaurus)
'in recollection of spring for comparison' is the wordplay.
'in' is an insertion indicator.
'recollection of' is a reversal indicator (recollect letters in the opposite direction).
'spring' becomes 'leap' (both can mean to jump).
'for comparison' becomes 'rall' (I can't explain this - if you can you should give a lot more credence to this answer).
'leap' written backwards gives 'pael'.
'pael' placed around 'rall' is 'PARALLEL'.
'slightly lacking' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for parallel that I've seen before include "Maintaining distance apart" , "Everywhere is equidistant and doesn't intersect" , "Continuously at equal distances apart" , "Analogy; line of latitude" , "Corresponding" .)