Cast regularly seen inside at that place (7)
I believe the answer is:
theatre
'cast regularly seen inside at that place' is the definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'cast regularly seen inside at that place' is the wordplay.
'regularly seen' indicates alternate letters.
'inside' indicates putting letters inside.
'at that place' becomes 'there' (synonyms).
The alternate letters of 'cast' are 'at'.
'at' put inside 'there' is 'THEATRE'.
Can you help me to learn more?
(Other definitions for theatre that I've seen before include "place of action" , "Building for the dramatic arts" , "Space for dramatic art and surgery" , "within which one may operate" , "Play scene" .)