Abbreviation of alternate. / Abbreviation of alternative, especially as a cultural phenomenon seen as being outside the mainstream of its genre.

(sciences) Abbreviation of telomeric repeat-binding factor. / (US military) Abbreviation of terrain flight (“flight close to the ground, to avoid enemy detection or fire”).

The 14th-century revival of classical art, architecture, literature and learning that originated in Italy and spread throughout Europe over the following two centuries.

plural of carnival