Crossword Genius

Regularly we climb tree (3)


I believe the answer is:


Here is my best explanation:

'tree' is the definition.
(elm tree is a kind of tree)

'regularly we climb' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
The alternate letters of 'weclimb' are 'ELM'.

This clue was last seen in The Times