biweekly

(noun) a periodical that is published twice a week or every two weeks (either 104 or 26 issues per year).

(adj) occurring every two weeks. Synonyms: fortnightly.

(adj) occurring twice a week. Synonyms: semiweekly.

(adv) twice a week. Synonyms: semiweekly. Example: "He called home semiweekly."

(adv) every two weeks. Synonyms: fortnightly. Example: "He visited his cousins fortnightly."