Gave a chap the wrong date (7)
I believe the answer is:
donated
'gave' is the definition.
(donating is a kind of giving)
'a chap the wrong date' is the wordplay.
'a chap' becomes 'don' ().
'the wrong' is an anagram indicator.
'date' with letters rearranged gives 'ated'.
'don'+'ated'='DONATED'
(Other definitions for donated that I've seen before include "Presented" , "Given" , "Gave" .)