BIWEEKLY Meaning of BIWEEKLY in English adv., adj., & n.adv. 1 every two weeks. 2 twice a week. adj. produced or occurring biweekly. n. (pl. -ies) a biweekly periodical. °See the note at bimonthly. Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012