Crossword Genius

Eastern open country antelopes eating a small tree (9)

Ross

I believe the answer is:

elaeagnus

I'm a little stuck... Click here to teach me more about this clue!

'tree' is the definition.
The definition and answer can be both plants as well as being singular nouns.
Perhaps there's a link between them I don't understand?

I can't explain the rest of the clue.

Can you help me to learn more?

I've seen this clue in The Times and The Sunday Times.
Want a hint initially instead of a full solution? Install my app