Crossword Genius

B in test characteristic of a certain group (6)

Ross

I believe the answer is:

tribal

'characteristic of a certain group' is the definition.

'b in test' is the wordplay.
'in' is an insertion indicator.
'test' becomes 'trial' ('trial' can be a synonym of 'test').
'b' put inside 'trial' is 'TRIBAL'.

(Other definitions for tribal that I've seen before include "between extended families" , "Of a group of people related by blood" , "Clannish" , "Like certain social groups" , "Like some groups of people" .)

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