A contest, especially for spelling; see spelling bee.
The name of the Latin-script letter B.
Any of the pieces of hard wood bolted to the sides of the bowsprit, to reeve the fore-topmast stays through.
A flying insect, of the clade Anthophila within the hymenopteran superfamily Apoidea, known for its organised societies (though only a minority have them), for collecting pollen and (in some species) producing wax and honey.
A community gathering to share labour, e.g. a sewing bee or a quilting bee.
An idée fixe, an obsession.