I rushed round when spotted (5)
I believe the answer is:
spied
'spotted' is the definition.
('spy' can be a synonym of 'spot')
'i rushed round' is the wordplay.
'rushed' becomes 'sped' ('speed' can be a synonym of 'rush').
'round' is an insertion indicator.
'i' going within 'sped' is 'SPIED'.
'when' acts as a link.
(Other definitions for spied that I've seen before include "Saw" , "Noticed" , "Caught sight of" , "Seen" , "Watched secretly" .)