ao

noun1

1. •
   grue ("blue or green", considered as one color)

adverb1

1. •
   Initialism of amongst/among/and others.

adjective1

1. •
   Initialism of adults only.

noun7

1. •
   Initialism of atomic orbital.
2. •
   Abbreviation of area of operations.
3. •
   Abbreviation of autonomous oblast.
4. •
   Abbreviation of autonomous okrug.
5. •
   (Hong-Kong) Initialism of administrative officer.
6. •
   Abbreviation of alpha and omega.
7. •
   (US, Navy) Abbreviation of auxiliary oiler.

noun2

1. •
   [plural only] A tribe living primarily in the state of Nagaland in India.
2. •
   Abbreviation of aorta.

preposition1

1. •
   Abbreviation of about.