Luxury vehicle left? One moment (4)
I believe the answer is:
limo
'luxury vehicle' is the definition.
'limo' can be an answer for 'vehicle' (limo is a kind of vehicle). I am not certain of the 'luxury' bit.
'left? one moment' is the wordplay.
'left?' becomes 'l' (common abbreviation).
'one' becomes 'i' (Roman numeral).
'moment' becomes 'mo' (as in 'just a mo').
'l'+'i'+'mo'='LIMO'
Can you help me to learn more?
(Other definitions for limo that I've seen before include "Luxury car" , "Long motor" , "Set of rooms" , "Stretched car, often used for partying" , "vehicle" .)