Alight on gold carriage
I believe the answer is:
landau
'carriage' is the definition.
(landau is a kind of carriage)
'alight on gold' is the wordplay.
'alight' becomes 'land' (I've seen this before).
'on' says to put letters next to each other.
'gold' becomes 'au' (Au is the chemical symbol for gold).
'land'+'au'='LANDAU'
(Other definitions for landau that I've seen before include "Four-wheeled horse-drawn carriage" , "Old-fashioned four-wheeled covered carriage" , "Horse-drawn, folded-top carriage" , "Transport" , "Four-wheeled vehicle with two folding hoods" .)