Driblet

(n.) A small piece or part; a small sum; a small quantity of money in making up a sum; as, the money was paid in dribblets.

Thesaurus Entries

ace, atom, bit, dab, dole, dot, dram, dribble, droplet, dwarf, farthing, fleck, flyspeck, fragment, globule, gobbet, grain, granule, groat, hair, handful, iota, jot, little, little bit, minim, minimum, minutiae, mite, modicum, molecule, mote, nutshell, ounce, particle, pebble, pinch, pittance, point, scrimption, scruple, smidgen, smitch, speck, spoonful, spot, thimbleful, tiny bit, tittle, trifling amount, trivia, whit