Search, ourselves, for the pamphlet (10)
I believe the answer is:
prospectus
'the pamphlet' is the definition.
The answer and definition can be both related to communication as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'search ourselves' is the wordplay.
'search' becomes 'prospect' (prospecting is a kind of searching).
'ourselves' becomes 'us'.
'prospect'+'us'='PROSPECTUS'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for prospectus that I've seen before include "Promotional booklet" , "Booklet of what's on offer" , "Programme" , "Brochure giving details of college courses etc" , "Advertising booklet for school or university" .)