One making beastly noise shelters against railing (10)

I believe the answer is:

inveighing

'railing' is the definition.
('inveigh' can be a synonym of 'rail')

'one making beastly noise shelters against' is the wordplay.
'one' becomes 'i' (Roman numeral).
'making beastly noise' becomes 'neighing'.
'shelters' indicates putting letters inside.
'against' becomes 'v' (abbreviation for 'versus').
'neighing' enclosing 'v' is 'nveighing'.
'i'+'nveighing'='INVEIGHING'

I've seen this clue in The Guardian.

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