Crossword Genius

An opening word (6)

Ross

I believe the answer is:

sesame

'an opening word' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for sesame that I've seen before include "'Open - - !' (Ali Baba)" , "Plant with oily seeds" , "Seeds producing an edible oil" , "Open . . . . . . is a magic phrase to gain entry" , "Open ...... is magic phrase for obtaining access" .)

I've seen this clue in the Evening Standard.
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