Real Dictionary

broom
countable noun: A broom is a kind of brush with a long handle. You use a broom for sweeping the floor.
uncountable noun: Broom is a wild bush with a lot of tiny yellow flowers.

broom in American English
any of a group of flowering shrubs (esp. genera Cytisus, Genista, and Spartium) of the pea family, often grown for their abundant, usually yellow, flowers
to sweep as with a broom
intransitive verb: to be crushed and spread at the top from being driven
noun: an implement for sweeping, consisting of a brush of straw or stiff strands of synthetic material bound tightly to the end of a long handle
transitive verb: to sweep

broom in British English
noun: an implement for sweeping consisting of a long handle to which is attached either a brush of straw, bristles, or twigs, bound together, or a solid head into which are set tufts of bristles or fibres