Underground Railroad
Underground Railway | secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War |
quarterback
signal caller
field general | (American football) the position of the football player in the backfield who directs the offensive play of his team, quarterback is the most important position on the team |
| operating procedure | a procedure for operating something or for dealing with a given situation |
standing operating procedure
standard operating procedure
SOP
standard procedure | a prescribed procedure to be followed routinely, rote memorization has been the educator's standard operating procedure for centuries |
cable railway
funicular
funicular railway | a railway up the side of a mountain pulled by a moving cable and having counterbalancing ascending and descending cars |
car railcar
railway car
railroad car | a wheeled vehicle adapted to the rails of railroad, three cars had jumped the rails |
cog railway
rack railway | railway for steep mountains, a cogwheel on the locomotive engages cogs on a center rail to provide traction |
elevated railway
elevated railroad
elevated
el
overhead railway | a railway that is powered by electricity and that runs on a track that is raised above the street level |
line railway line
rail line | the road consisting of railroad track and roadbed |
locomotive
engine locomotive engine
railway locomotive | a wheeled vehicle consisting of a self-propelled engine that is used to draw trains along railway tracks |
| operating microscope | binocular microscope used in surgery to provide a clear view of small and inaccessible parts of the body (as in microsurgery) |
operating room
OR
operating theater
operating theatre
surgery | a room in a hospital equipped for the performance of surgical operations, great care is taken to keep the operating rooms aseptic |
| operating table | table on which the patient lies during a surgical operation |
| pantograph | mechanical device used to copy a figure or plan on a different scale |
railroad track
railroad railway | a line of track providing a runway for wheels, he walked along the railroad track |
railway
railroad
railroad line
railway line railway system | line that is the commercial organization responsible for operating a system of transportation for trains that pull passengers or freight |
| railway junction | a junction where two or more railway lines meet or cross |
railway station
railroad station
railroad terminal
train station
train depot | terminal where trains load or unload passengers or goods |
| scenic railway | small railway in an amusement park |
signal box
signal tower | a building from which signals are sent to control the movements of railway trains |
yard railway yard
railyard | an area having a network of railway tracks and sidings for storage and maintenance of cars and engines |
| signal level | the amplitude level of the desired signal |
operating capability
performance capability | the capability of a technological system to perform as intended |
signal detection
detection | the detection that a signal is being received |
instruction manual
instructions
book of instructions
operating instructions | a manual usually accompanying a technical device and explaining how to install or operate it |
operating system
OS | (computer science) software that controls the execution of computer programs and may provide various services |
DOS
disk operating system | an operating system that is on a disk |
MS-DOS
Microsoft disk operating system | an operating system developed by Bill Gates for personal computers |
UNIX
UNIX system
UNIX operating system | trademark for a powerful operating system |
signal
signaling
sign | any nonverbal action or gesture that encodes a message, signals from the boat suddenly stopped |
starting signal
start | a signal to begin (as in a race), the starting signal was a green light, the runners awaited the start |
| storm signal | a signal announcing the approach of a storm (particularly a storm of marked violence) |
| time signal | a signal (especially electronic or by radio) indicating the precisely correct time |
alarm
alert warning signal
alarum | an automatic signal (usually a sound) warning of danger |
distress signal
distress call | an internationally recognized signal sent out by a ship or plane indicating that help is needed |
reveille
wake-up signal | (military) signal to wake up |
telegraphic signal
radiotelegraphic signal | a signal transmitted by telegraphy |
| visual signal | a signal that involves visual communication |
traffic light
traffic signal
stoplight | a visual signal to control the flow of traffic at intersections |
flag
signal flag | a rectangular piece of fabric used as a signalling device |
code flag
nautical signal flag | one of an international code of flag signals used between ships |
blinker
turn signal
turn indicator
trafficator | a blinking light on a motor vehicle that indicates the direction in which the vehicle is about to turn |
| electronic signal | a signal generated by electronic means |
signal fire
signal light | a fire set as a signal |
input signal
input | signal going into an electronic system |
output signal
output | signal that comes out of an electronic system |
background
background signal | extraneous signals that can be confused with the phenomenon to be observed or measured, they got a bad connection and could hardly hear one another over the background signals |
| signal | any incitement to action, he awaited the signal to start, the victory was a signal for wild celebration |
chief executive officer
CEO
chief operating officer | the corporate executive responsible for the operations of the firm, reports to a board of directors, may appoint other managers (including a president) |
quarterback
signal caller
field general | (football) the person who plays quarterback |