noun
plural beads
[count] a small, usually round piece of glass, wood, stone, etc., that has a hole through its center and that is put on a string with other similar pieces and worn as jewelry or that is sewn onto clothing
see color picture
a small, round drop of liquid (such as water or blood)
draw a bead on
also US get a bead on or take a bead on
to aim at (someone or something)