Crossword Genius

Tiny amplifier Nigeria had developed (7,3)

Ross

I believe the answer is:

hearing aid

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

'tiny amplifier' is the definition.
'hearing aid' can be an answer for 'amplifier' (thesaurus). I am not sure about the 'tiny' bit.

'nigeria had developed' is the wordplay.
'developed' indicates anagramming the letters.
'nigeria'+'had'='nigeriahad'
'nigeriahad' is an anagram of 'HEARING-AID'.

Can you help me to learn more?

(Other definitions for hearing aid that I've seen before include "Amplifier for ear" , "Help for the partially deaf" , "Ear trumpet" , "Earpiece" , "asset in court?" .)

I've seen this clue in The Times.
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