Here is a list of nouns that start with BLU.
blubber, bludgeon, blue, blueberry, bluebook
bluebush, bluefish, blueprint, bluestocking, bluff
bluing, blunder, blur, bluster
Hope you enjoy this page of nouns that start with blu and the rest of this noun list a-z site as well.
Help make this a better resource by adding more nouns in the comments section. Thanks.