It may precipitate a drenching (5)

I believe the answer is:

cloud

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

'it may precipitate a drenching' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

Can you help me to learn more?

(Other definitions for cloud that I've seen before include "''I wandered lonely as a ...'' (Wordsworth)" , "Condensed air vapour" , "Nebula" , "Make less transparent" , "Eg, cumulus" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app