Baby has the hollow right to wobble (6)
I believe the answer is:
totter
'to wobble' is the definition.
(tottering is a kind of wobbling)
'baby has the hollow right' is the wordplay.
'baby' becomes 'tot' (I've seen this in another clue).
'has' says to put letters next to each other.
'hollow' suggests removing the centre (the word is hollowed out).
'right' becomes 'r' (common abbreviation).
'the' with its middle taken out is 'te'.
'tot'+'te'+'r'='TOTTER'
(Other definitions for totter that I've seen before include "Stand/walk unsteadily" , "Walk unsteadily as if about to collapse" , "Walk shakily as if about to fall" , "Rag-and-bone man - summer" , "Sway, as if about to fall" .)