Definitions for: Biweekly

[adv] every two weeks; "he visited his cousins fortnightly"
[adj] occurring every two weeks

Webster (1913) Definition: Bi"week`ly, a. [Pref. bi- + weekly.]
Occurring or appearing once every two weeks; fortnightly. --
n. A publication issued every two weeks. -- Bi"week"ly,
adv.

Synonyms: fortnightly, fortnightly