US lawyer given thanks for information (4)
I believe the answer is:
data
'information' is the definition.
(data are bits of information)
'us lawyer given thanks' is the wordplay.
'us lawyer' becomes 'da' (abbreviation for District Attorney).
'given' is a charade indicator (letters next to each other).
'thanks' becomes 'ta' (UK informal version of 'thank you').
'da'+'ta'='DATA'
'for' acts as a link.
(Other definitions for data that I've seen before include "Numerical facts" , "Known facts" , "Facts and statistics collected together" , "Factual information" , "Statistical information" .)