Somehow I find it's one from a dictionary

I believe the answer is:

definitions

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'from a dictionary' is the definition.
I can't tell whether this definition defines the answer.

'somehow i find it's one' is the wordplay.
'somehow' is an anagram indicator.
'i'+'find'+'its'+'one'='ifinditsone'
'ifinditsone' is an anagram of 'DEFINITIONS'.

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I've seen this clue in The Irish Independent.

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