Did this Strait take its name from a mine? (5)

I believe the answer is:

menai

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'did this strait take its name' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'from a mine?' is the wordplay.
'from' indicates anagramming the letters (from the letters).
'a'+'mine'='amine'
'amine' with letters rearranged gives 'MENAI'.

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(Other definitions for menai that I've seen before include "Name of Welsh strait" , "Strait between Anglesey and Welsh mainland" .)

I've seen this clue in the Evening Standard.

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