ai

from The Century Dictionary.

• noun A common English digraph, representing generally the sound of “long a” (ā), which becomes ã before r, as in ail (sounded like ale), vain (sounded like vane, vein), air (sounded like ere, heir), etc.
• noun The three-toed sloth, Bradypus tridactylus or torquatus: so called from having a feeble, plaintive cry somewhat resembling the sound represented by its name. See sloth and Bradypus.
• noun Same as ahyu.
• noun An abbreviation of Adjutant Inspector General.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Zoöl.) The three-toed sloth (Bradypus tridactylus) of South America. See sloth.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A type of three-toed sloth, Bradypus tridactylus, inhabiting forests of southern Venezuela, the Guianas, and northern Brazil.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• 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
• noun the introduction of semen into the oviduct or uterus by some means other than sexual intercourse