Tot with leg raised (3)
I believe the answer is:
nip
'tot' is the definition.
(I've seen this in another clue)
'leg raised' is the wordplay.
'leg' becomes 'pin' (pin is a kind of leg).
'raised' says the letters should be written in reverse (going up in a down clue).
'pin' written backwards gives 'NIP'.
'with' is the link.
(Other definitions for nip that I've seen before include "pop and > have a bite" , "Feeling cold" , "Shot" , "Small drink or small bite" , "In the air, it feels cold" .)