WordNet (r) 3.0 (2006):

teardrop
    n 1: anything shaped like a falling drop (as a pendant gem on an
         earring)
    2: a drop of the clear salty saline solution secreted by the
       lacrimal glands; "his story brought tears to her eyes" [syn:
       tear, teardrop]

Moby Thesaurus II by Grady Ward, 1.0:

56 Moby Thesaurus words for "teardrop":
   bawling, bead, blubbering, chyle, colostrum, cry, crying, dewdrop,
   discharge, drop, droplet, fit of crying, flood of tears, gleet,
   good cry, greet, humor, ichor, lachryma, lachrymosity, lacrimatory,
   lactation, leukorrhea, lymph, matter, melting mood, milk, mucor,
   mucus, overflowing eyes, pearl, peccant humor, phlegm, purulence,
   pus, raindrop, rheum, saliva, sanies, serous fluid, serum,
   sniveling, snot, sobbing, suppuration, sweat, tear, tear bottle,
   tearful eyes, tearfulness, tears, the whites, urine, weepiness,
   weeping, whimpering