Cavalcade

Cavalcade: A procession of riders on horseback. Or, a cavalcade might also be a ceremonial procession, as in, a parade. Cavalcades no longer require horses. These days, a cavalcade could be a procession of vehicles, as in, “the presidential cavalcade.” Several years...

Equerry

Equerry: a personal attendant of a member of the royal family. Historically, the equerry was the royal stable. The equerry was also the name of those in charge of the horses of a nobleman. This word looks like it desperately wants to derive from the Latin word equus,...

Hippocampus

Hippocampus: a mythological creature.  The hippocampus was part dolphin, part horse.  Archaeologists have found paintings to the hippocampus in the ruins of Pompeii.  Hippocampus may also refer to a genus of fish with a neck and head that look remarkably like a...

Semaphore

Semaphore: A signaling system.  A semaphore uses flags, lights, or mechanical arms to send messages, usually to travelers.  You might see a semaphore next to the railroad tracks. The word might also refer to a system of sending messages by holding the arms or flags in...

Pyrophoric

Pyrophoric: liable to ignite spontaneously when exposed to air.  You know, like..  Charlie Sheen.  While a pyrophoric chemical might ignite, a pyrophoric alloy will produce sparks when struck.  Lighter flints, for example, are pyrophoric.  The flintlock mechanism in...