simple past tense and past participle of about-face

State of nonexistence; the condition of being nothing. / Void; emptiness. / Quality of inconsequentiality; lacking in significance.

A county of Georgia, United States. County seat: Camilla.

(transitive, slang, dated, horse racing) To geld (a horse). / Used other than figuratively or idiomatically: see add, list. / (transitive) To consider as an additional example to an expansive list.