(US) A small dwelling characteristic of the frontier, especially when built from logs with simple tools and not constructed by professional builders, but by those who meant to live in it.

Initialism of Arctic oscillation. / (video games) Initialism of Anarchy Online. / Initialism of Annoying Orange, an Internet-based cartoon series.

(computing, copyright law, transitive, colloquial) To release under the GPL.

(obsolete) Synonym of squalene