Crossword Genius

Key explorer smiles broadly, supporting members (10)

Ross

I believe the answer is:

crossbeams

'members' is the definition.
(member can mean a structural support)

'key explorer smiles broadly supporting' is the wordplay.
'key' becomes 'c' (I've seen this in other clues).
'explorer' becomes 'ross' (c9th-century explorer John Ross).
'smiles broadly' becomes 'beams' (I've seen this before).
'supporting' says to put letters next to each other (in a down clue, some letters go below others).
'c'+'ross'+'beams'='CROSSBEAMS'

I've seen this clue in The Times.
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