Caller misdirected downstairs (6)
I believe the answer is:
cellar
'caller misdirected downstairs' is the definition.
I can't tell whether this definition defines the answer.
'caller misdirected' is the wordplay.
'misdirected' is an anagram indicator (I've seen this in other clues).
'caller' with letters rearranged gives 'CELLAR'.
Can you help me to learn more?
(Other definitions for cellar that I've seen before include "Underground store room" , "Space for storing wine, say" , "Place for wine" , "Wine vault" , "Basement store" .)