Crossword Genius

A little rainfall indicator? (6)

Ross

I believe the answer is:

shower

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

'a little rainfall' is the definition.
'shower' can be an answer for 'rainfall' (shower is a kind of rainfall). I am unsure of the 'a little' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for shower that I've seen before include "Person uncovering" , "Short fall of rain" , "Something depicting" , "Fall of rain; slack people (slang)" , "One who indicates way" .)

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