Synonyms for Pill (same or very similar meaning)
WordNet sense 1 (a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception):
anovulant, contraceptive pill, anovulatory drug, birth control pill, oral contraceptive, oral contraceptive pillWordNet sense 2 (a dose of medicine in the form of a small pellet):
lozenge, tab, tabletFrom the ODE community, based on WordNetadd/edit