a route regularly used by airplanes; airway.
- Air-launched cruise missile
a winged, jet-powered missile designed to be launched from an aircraft and to fly toward the target at low altitude on automatic guidance, with a range of almost 2500 miles (4023 km). Abbreviation: ALCM, A.L.C.M.
- Air layer
to treat a plant by means of air layering. to use air layering to propagate a plant. a plant, commonly a young one, that has been propagated by air layering.
- Air layering
a method of propagating a plant by girdling or cutting part way into a stem or branch and packing the area with a moist medium, as sphagnum moss, stimulating root formation so that the stem or branch can be removed and grown as an independent plant.
- Air letter
an airmail letter. a sheet of very lightweight stationery for use in airmail. noun another name for aerogram (sense 1)