Was blue bike seen here? (5)
I believe the answer is:
moped
This clue could be a double definition.
'was blue' is the first definition.
(past tense of 'mope')
'bike seen here?' is the second definition.
'moped' can be an answer for 'bike' (I've seen this before). I'm not sure about the 'seen here?' bit.
Can you help me to learn more?
(Other definitions for moped that I've seen before include "Light motorcycle" , "dejected" , "Motor vehicle - languished" , "Vehicle - was blue" , "means of transport" .)