Dawn escape in which one runs beside street (5,5)
I believe the answer is:
first light
'dawn' is the definition.
(synonyms)
'escape in which one runs beside street' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'i' (Roman numeral) and 'i' is found within the answer.
'runs' could be 'r' (cricket abbreviation) and 'r' is found within the answer.
'street' could be 'st' (abbreviation) and 'st' is found in the answer.
'escape' could be 'flight' (synonyms) and 'flight' is present in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for first light that I've seen before include "start of day" , "Instructions for enjoying cigarette" , "time for dawn chorus" , "early in the day" , "Glimmering" .)