Crossword Genius

Store ammo haphazardly in humid location (5,4)

Ross

I believe the answer is:

steam room

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'humid location' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.

'store ammo haphazardly' is the wordplay.
'haphazardly' indicates an anagram.
'store'+'ammo'='storeammo'
'storeammo' is an anagram of 'STEAM ROOM'.

'in' is the link.

Can you help me to learn more?

(Other definitions for steam room that I've seen before include "Vapour bath -- more atoms (anag)" , "sauna" .)

I've seen this clue in The Times.
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