Definition of “batten down the hatches” - English Dictionary

british dictionary

“batten down the hatches” in British English

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batten down the hatches

to fasten the entrances to the lower part of a ship using wooden boards

to prepare for a difficult situation:

When you're coming down with flu all you can do is batten down the hatches and wait for it to pass.

(Definition of “batten down the hatches” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)