Hmmm, cavalier meets ___side shelter (3,2,3)
I believe the answer is:
let me see
'hmmm' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'cavalier meets side shelter' is the wordplay.
'cavalier' indicates anagramming the letters (a cavalier or careless spelling).
'side' becomes 'l' (abbreviation for left).
'shelter' becomes 'ee' (I am not sure about this - if you are sure you should believe this answer much more).
'meets'+'l'='meetsl'
'meetsl' is an anagram of 'letmes'.
'letmes'+'ee'='LET ME SEE'
Can you help me to learn more?
(Other definitions for let me see that I've seen before include "I'd like to have a look at that" , "Um..." , "I must think about this" , "What do I do next" , "I'm thinking - permit me to visualise" .)