1911 Encyclopædia Britannica/Aba
ABA. (1) A form of altazimuth instrument, invented by, and called after, Antoine d’Abbadie; (2) a rough homespun manufactured in Bulgaria; (3) a long coarse shirt worn by the Bedouin Arabs.
See also Abaya and Antoine Thomson d'Abbadie on Wikipedia; aba at Wiktionary; and our 1911 Encyclopædia Britannica disclaimer.
ABA. (1) A form of altazimuth instrument, invented by, and called after, Antoine d’Abbadie; (2) a rough homespun manufactured in Bulgaria; (3) a long coarse shirt worn by the Bedouin Arabs.