Shocked as lorry appears outside empty warehouse (9)
I believe the answer is:
awestruck
'shocked' is the definition.
(I've seen this before)
'as lorry appears outside empty warehouse' is the wordplay.
'lorry' becomes 'truck' (I've seen this before).
'appears' says to put letters next to each other (some letters appear after others).
'outside' means one lot of letters goes inside another (some letters go outside others).
'empty' means to remove the middle letters.
'warehouse' with its middle removed is 'we'.
'as'+'truck'='astruck'
'astruck' enclosing 'we' is 'AWESTRUCK'.
(Other definitions for awestruck that I've seen before include "Showing a feeling of wonder and dread" , "full of admiration" , "Stunned" , "Terrified" , "Suck water (anag) - completely astonished" .)