小河
Rivulet \Riv"u*let\, n. [Earlier rivolet, It. rivoletto, a dim. fr. rivolo, L. rivulus, dim. of rivus a brook. CF. {Rival}, {Rite}.] A small stream or brook; a streamlet. By fountain or by shady rivulet He sought them. --Milton.
rivulet n : a small stream [syn: {rill}, {run}, {runnel}, {streamlet}]