It's all over the floor in the carriage, darling (6)
I believe the answer is:
carpet
'it's all over the floor in' is the definition.
I can't tell whether this defines the answer.
'carriage darling' is the wordplay.
'carriage' becomes 'car' (I've seen this in other clues).
'darling' becomes 'pet' (both are terms of endearment).
'car'+'pet'='CARPET'
'the' acts as a link.
Can you help me to learn more?
(Other definitions for carpet that I've seen before include "A red ...... is rolled out for VIPs" , "Tear a strip off" , "Tear into - floor covering" , "Tell off" , "from Brussels, for instance" .)