Tea room sent back plaited loaf (7)
I believe the answer is:
challah
'plaited loaf' is the definition.
The answer and definition are not the same part of speech. However, I know that 'plaited' relates to this answer.
'tea room sent back' is the wordplay.
'tea' becomes 'cha' (cha is a type of tea).
'room' becomes 'hall' (hall is a kind of room).
'sent back' says the letters should be written in reverse.
'hall' reversed gives 'llah'.
'cha'+'llah'='CHALLAH'
Can you help me to learn more?
(Another definition for challah that I've seen is " Bread".)