Colour that is one day to be a guide? (7)
I believe the answer is:
brownie
'colour that is one day to be a guide?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'colour that is' is the wordplay.
'colour' becomes 'brown' (brown is a kind of colour).
'that is' becomes 'ie' (short for Latin 'id est', 'that is').
'brown'+'ie'='BROWNIE'
Can you help me to learn more?
(Other definitions for brownie that I've seen before include "Chocolate cake; elf" , "Girl cub - chocolate cake" , "Girl in uniform" , "Chocolate cake square" , "Junior member of girl's movement ..." .)