| sky |
the upper atmosphere, esp. as it appears to arch over the earth. [4 definitions] |
| sky blue |
a color like that of a clear daytime sky; light to pale blue; azure. |
| skycap |
a baggage porter at an airline terminal. |
| skydive |
to jump or dive from an airplane and perform various acrobatic stunts before opening one's parachute, done as a sport or for exhibition. |
| skydiving |
the sport of jumping from an airplane and performing body maneuvers before opening the parachute. |
| sky-high |
extremely or extravagantly high. [2 definitions] |
| skyjack |
to take control of (an airplane), esp. in flight, by force or threats, usu. to coerce the pilot to fly to an unscheduled destination; hijack. |
| skylark |
either of two larks, found in Europe and Asia, that are known for singing in flight. [2 definitions] |
| skylight |
a window in a roof or ceiling, used to admit light. |
| skyline |
the line formed by the apparent boundary between the earth and the sky; horizon. [2 definitions] |
| sky marshal |
a federal law enforcement officer assigned to prevent the hijacking of commercial airliners. |
| skyrocket |
a firework that shoots high in the air before exploding in a shower of brilliant, colored sparks. [2 definitions] |
| skysail |
the uppermost sail on the mainmast of a square-rigged ship. |
| skyscraper |
an extremely tall building. |
| skyward |
to or toward the sky. [2 definitions] |
| skyway |
a route for travel by air; air lane. [3 definitions] |
| skywrite |
to perform skywriting. [2 definitions] |
| skywriting |
the act, process, or method of tracing words or designs in the sky with a visible chemical vapor released from an airplane in flight. [2 definitions] |
| slab |
a flat, usu. wide and thick piece of some solid, such as rock or food. [3 definitions] |
| slack1 |
not tight or taut. [12 definitions] |
| slack2 |
the fragments and dust left after coal has been screened. |