ZIZZ INFORMAL, Meaning of ZIZZ INFORMAL, in English zizz informal,chiefly Brit.■ noun1》 a whizzing or buzzing sound. 2》 a short sleep. ■ verb1》 make a whizzing or buzzing sound. 2》 doze; sleep.OriginC19: imitative. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004