Turn a blind eye without Beryl Flood (8)

I believe the answer is:

inundate

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'flood' is the definition.
('inundate' can be a synonym of 'flood')

I don't understand how the rest of the clue works.

(Other definitions for inundate that I've seen before include "Overwhelm with things to be done" , "Submerge or cover in water" , "be overwhelming" , "Flood, cover with water" , "'Flood, swamp (8)'" .)

I've seen this clue in The Irish Times.

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