Make request, since it's the weekend (3)
I believe the answer is:
ask
'make request' is the definition.
'ask' can be an answer for 'request' (to ask is to request something). I am unsure of the 'make' bit.
'since it's the weekend' is the wordplay.
'since' becomes 'as' (both can mean 'because').
'it's the weekend' becomes 'k' (I've seen this in other clues).
'as'+'k'='ASK'
Can you help me to learn more?
(Other definitions for ask that I've seen before include "Put a question" , "Make enquiry" , "Enquire" , "Seek an answer" , "Pose" .)