rivulet
NounWordNet 3.0
Webster's Dictionary (GCIDE)
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. [1913 Webster]
By fountain or by shady rivulet He sought them. --Milton. [1913 Webster]