Language used in Djibouti? Yes and no (3)

I believe the answer is:

ibo

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

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

'in djibouti? yes and no' is the wordplay.
'IBO' is hidden in amongst the letters.
However, I'm uncertain how the hidden word is indicated.

'used' is the link.

Can you help me to learn more?

(Other definitions for ibo that I've seen before include "W African language" , "Language of Nigeria" , "Language used by some Africans" , "SE Nigerian language" , "One of chief cultural languages of Nigeria" .)

I've seen this clue in The Times.

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