1. (noun)pill, birth control pill, contraceptive pill, oral contraceptive pill, oral contraceptive, anovulatory drug, anovulant a contraceptive in the form of a pill containing estrogen and progestin to inhibit ovulation and so prevent conception Synonyms: birthcontrol pill, pill, tablet, anovulatory drug, anovulant, tab, contraceptive pill, lozenge, oral contraceptive, oral contraceptive pill