Crossword Genius

Under a cloud, I sprinted out (4)

Ross

I believe the answer is:

rain

I'm a little stuck... Click here to teach me more about this clue!

'under a cloud' is the definition.
I can't tell whether this definition defines the answer.

'i sprinted out' is the wordplay.
'sprinted' becomes 'ran' (I've seen this before).
'out' means one lot of letters goes inside another.
'i' put inside 'ran' is 'RAIN'.

Can you help me to learn more?

(Other definitions for rain that I've seen before include "eg A shower" , "Precipitation" , "Fall wetly" , "Cats and dogs?" , "Weather - shower" .)

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