Leg up offered in hurry (3)
I believe the answer is:
nip
'in hurry' is the definition.
'nip' can be an answer for 'hurry' (thesaurus). I am not sure about the 'in' bit.
'leg up' is the wordplay.
'leg' becomes 'pin' (pin is a kind of leg).
'up' says the letters should be written in reverse (in down clue: letters go upwards).
'pin' written backwards gives 'NIP'.
'offered' acts as a link.
Can you help me to learn more?
(Other definitions for nip that I've seen before include "Pinch or squeeze sharply" , "Pinch; drink of spirits" , "pop and > have a bite" , "small draught" , "Pinch with small drink" .)