Bluebeard :: Bluebeard (n.) The hero of a mediaeval French nursery legend, who, leaving home, enjoined his young wife not to open a certain room in his castle. She entered it, and found the murdered bodies of his former wives. -- Also used adjectively of a subject which it is forbidden to investigate..
Bluebell :: Bluebell (n.) A plant of the genus Campanula, especially the Campanula rotundifolia, which bears blue bell-shaped flowers; the harebell..
Bluebell :: Bluebell (n.) A plant of the genus Scilla (Scilla nutans).
Blueberry :: Blueberry (n.) The berry of several species of Vaccinium, an ericaceous genus, differing from the American huckleberries in containing numerous minute seeds instead of ten nutlets. The commonest species are V. Pennsylvanicum and V. vacillans. V. corymbosum is the tall blueberry..