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Harvard sentence

Harvard sentence  n.— «Verizon uses Harvard sentences—phonetically-balanced sentences developed by electrical engineers—to test signal quality. These special sentences use specific phonemes at the same rate they appear in English...

wig-wag

wig-wag  n.— «The banjo crossing signal, also called a wig-wag, was (and still might be in some places) a round target with a hole in the center that swung back and forth when activated. Looked somewhat like a banjo being swung back and...

wig-wag

wig-wag  n.— «They said the car…was northbound on Bathurst Street on Sunday night when the driver lost control. She was making a right turn and struck a CN wig-wag signal on the main north-south line.» —“Train gives youth rude...

steal-me flag

steal-me flag n. an upright mailbox flag, which indicates there is mail for pick-up but is also considered a signal to mail thieves. (source: Double-Tongued Dictionary)

pigeon flipping

pigeon flipping  n.— «Lately, troops say, insurgents have begun using a technique called pigeon flipping: while on patrol, the Marines have noticed flocks of pigeons circling above them, leading them to conclude that supporters of the...

jamming

jamming  n.— «Remember how the Soviets used to jam the signal when Radio Free Europe would broadcast behind the Iron Curtain? Today “jamming” literally means silencing your critics or opponents by attacking and intimidating...