nook (nooks plural )A nook is a small and sheltered place. n-count
We found a seat in a little nook, and had some lunch. If you talk about every nook and cranny of a place or situation, you mean every part or every aspect of it.
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nook and cranny phrase Ns inflect (emphasis)
(=corner)
Boxes are stacked in every nook and cranny at the factory., ...Cole's vast knowledge of the nooks and crannies of British politics.