skyline

Short definition from Wiktionary

Noun

1. 1
   The line that seems to be the boundary of the sky and the ground; the horizon.
2. 2
   The horizontal silhouette of a city or building against the sky.
3. 3
   A path of movement, especially military movement, producing a silhouette above terrain features visible from the location of likely observers.
4. 4
   A panel on the front page of a newspaper outlining some of the features to be found inside.
5. 5
   Ellipsis of skyline operator.
6. 6
   food, often Cincinnati chili, purchased from a Skyline Chili restaurant.

Verb

1. 1
   To outline something against the sky.
2. 2
   To filter by means of the skyline operator.