Shove the Spanish child's dog, half-cut (5)
I believe the answer is:
elbow
'shove' is the definition.
(elbowing is a kind of shoving)
'the spanish child's dog half-cut' is the wordplay.
'the spanish' becomes 'el'.
'child's dog' becomes 'bowwow' (I've seen this before).
'half-cut' means to take half the letters.
'bowwow' cut in half is 'bow'.
'el'+'bow'='ELBOW'
(Other definitions for elbow that I've seen before include "given to one about to leave" , "Below (anag.)" , "Arm joint, more power to it" , "push" , "Barge" .)