An aircraft that generates lift through the flapping of its wings.

Initialism of freedom of expression. / Initialism of forces of evil.

(web development) A website where new content is shown by dynamically replacing existing content in the web page rather than navigating to a different URL.

The figure of the moon as it appears between its first or last quarter and the new moon, with concave and convex edges terminating in points. / A curved pastry.