Crossword Genius

Colours textbook (8)

Ross

I believe the answer is:

standard

This clue is a double definition.

'colours' is the first definition.
(I've seen this before)

'textbook' is the second definition.
(thesaurus)

(Other definitions for standard that I've seen before include "sort of lamp" , "thing seen looking down The Mall?" , "Flag - of the usual kind" , "Level of quality; flag" , "Normal - colours" .)

I've seen this clue in the Sydney Morning Herald.
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