any small, round object, as the sight at the muzzle end of a gun barrel
a drop or bubble: beads of sweat
a bubble in an effervescing liquid
foam or a head, as on beer
a globule of metal, as gold or silver, obtained by refining in a cupel
the liplike region around a pneumatic tire that seals to the rim
Archit.
a narrow, half-round molding
a molding composed of small rounded ornaments, like a string of beads
Chem. a beadlike mass usually formed inside the loop of a platinum wire by the action of a flux, such as borax, upon the oxide or salt of certain metals: used in identifying metals in their compounds, since the metal determines the color of the bead