Jostle with the Spanish rower that’s at front (5)
I believe the answer is:
elbow
'jostle' is the definition.
(I know that elbow is a more specific form of jostle)
'with the spanish rower that's at front' is the wordplay.
'with' becomes 'w' (short for with).
'the spanish' becomes 'el' ('the' in Spanish).
'rower' becomes 'bo' (I can't explain this - if you can you should give a lot more credence to this answer).
'that's at front' is a charade indicator (letters next to each other) (some letters go in front of others).
'el'+'bo'='elbo'
'w' after 'elbo' is 'ELBOW'.
Can you help me to learn more?
(Other definitions for elbow that I've seen before include "Reject" , "Below (anag.)" , "Jostle" , "Dismissal?" , "part of the body" .)