bead, drop, pearl - a shape that is small and round; "he studied the shapes of low-viscosity drops"; "beads of sweat on his forehead"

lachrymal secretion, lacrimal secretion - saline fluid secreted by lacrimal glands; lubricates the surface of the eyeball

driblet, drop - a small quantity (especially of a liquid); "one drop of each sample was analyzed"; "any child with a drop of negro blood was legally a negro"; "there is not a drop of pity in that man"

H2O, water - binary compound that occurs at room temperature as a clear colorless odorless tasteless liquid; freezes into ice below 0 degrees centigrade and boils above 100 degrees centigrade; widely used as a solvent