Amazed to emerge from crash with small lorry (13)
I believe the answer is:
thunderstruck
'amazed' is the definition.
(synonyms)
'crash with small lorry' is the wordplay.
'crash with' becomes 'thunder' (I can't justify this - if you can you should give a lot more credence to this answer).
'small' becomes 's' (abbreviation - e.g. clothes size).
'lorry' becomes 'truck' (I've seen this before).
'thunder'+'s'+'truck'='THUNDERSTRUCK'
'to emerge from' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for thunderstruck that I've seen before include "Amazed" , "Very surprised, shocked" , "Stupefied" , "Completely taken aback" , "Dumbfounded" .)