Give Geronimo javelin while crossing desert (6)

I believe the answer is:

mojave

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'desert' is the definition.
(I know that Mojave is a desert)

'give geronimo javelin while crossing' is the wordplay.
'MOJAVE' is hidden in amongst the letters.
However, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Another definition for mojave that I've seen is " S. California desert".)

I've seen this clue in The Irish Times.

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