The Collaborative International Dictionary
Ataunt
Ataunt \A*taunt"\, Ataunto \A*taunt"o\, adv. [F. autant as much (as possible).] (Naut.) Fully rigged, as a vessel; with all sails set; set on end or set right.
Wiktionary
ataunt
adv. (context nautical English) Fully rigged, as a vessel; with all sails set; set on end or set right.