Crossword Genius

Three men regularly seen in plane perhaps (4)

Ross

I believe the answer is:

tree

'plane perhaps' is the definition.
(I've seen this before)

'three men regularly seen' is the wordplay.
'regularly seen' indicates alternate letters.
'three'+'men'='threemen'
The alternating letters of 'threemen' are 'TREE'.

'in' is the link.

(Other definitions for tree that I've seen before include "Large plant with trunk" , "Plant with bark" , "Large woody plant (4)" , "Sequoia, for example" , "Christmas decoration" .)

I've seen this clue in The Independent.
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