Dad with year to travel west in bark (3)
I believe the answer is:
yap
'bark' is the definition.
(I know that yap is a kind of bark)
'dad with year to travel west' is the wordplay.
'dad' becomes 'pa' (both can mean one's father).
'with' is a charade indicator (letters next to each other).
'year' becomes 'y'.
'to travel west' is a reversal indicator.
'pa'+'y'='pay'
'pay' back-to-front is 'YAP'.
'in' is the link.
(Other definitions for yap that I've seen before include "Shrill bark; wage reversed" , "Pay up for shrill bark (3" , "Pay up for chatter" , "Bark like a tiny dog - speak constantly" , "Yelp" .)