Meaning

noun an agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders

noun the branch of computer science that deal with writing computer programs that can solve problems creatively

noun a sloth that has three long claws on each forefoot and each hindfoot

originOriginated 1685–95, from Brazilian Portuguese aí, from Old Tupi a'y.

Etymology from Wiktionary, CC BY-SA 3.0