disk, saucer, disc - something with a round shape like a flat circular plate

executive department - a federal department in the executive branch of the government of the United States

FAA, Federal Aviation Agency - an agency in the Department of Transportation that is responsible for the safety of civilian aviation

Transportation Safety Administration, TSA - an agency established in 2001 to safeguard United States transportation systems and insure safe air travel

U. S. Coast Guard, United States Coast Guard, US Coast Guard - an agency of the Department of Transportation responsible for patrolling shores and facilitating nautical commerce

international Morse code, Morse, Morse code - a telegraph code in which letters and numbers are represented by strings of dots and dashes (short and long signals)

radiotelegraphic signal, telegraphic signal - a signal transmitted by telegraphy

LSD, lysergic acid diethylamide - a powerful hallucinogenic drug manufactured from lysergic acid

cover, extend - span an interval of distance, space or time; "The war extended over five years"; "The period covered the turn of the century"; "My land extends over the hills on the horizon"; "This farm covers some 200 acres"

spray - scatter in a mass or jet of droplets; "spray water on someone"; "spray paint on the wall"

spray - be discharged in sprays of liquid; "Water sprayed all over the floor"

spatter, splatter, plash, swash, splash, splosh - dash a liquid upon or against; "The mother splashed the baby's face with water"

splash, sprinkle, splosh - cause (a liquid) to spatter about, especially with force; "She splashed the water around her"

discharge - pour forth or release; "discharge liquids"

bespangle - dot or sprinkle with sparkling or glittering objects

aerosolize, aerosolise - disperse as an aerosol; "The bacteria suspension was aerosolized"

write - communicate or express by writing; "Please write to me every week"

mark - make or leave a mark on; "mark the trail so that we can find our way back"