| blinker |
a flashing light, especially one used on a car to signal that the car will turn and to show which way it will turn. |
| cue1 |
anything done or said during a play that is a signal for an actor to say or do something. [1/3 definitions] |
| fire alarm |
a device that gives off a noise to signal that a fire is occurring. |
| flag1 |
to signal, using a flag or as if using a flag(sometimes followed by "down"). [1/2 definitions] |
| flare |
a bright light used to signal or give light. [1/5 definitions] |
| gavel |
a small wooden hammer. It is used by a judge or someone in charge of a meeting or auction to get attention, call for order, or signal a sale. |
| half-mast |
a point halfway down a flagpole. A flag is flown at half-mast as a sign of respect or sorrow when someone has died or, on a ship, as a signal of great need or trouble. |
| hang up |
to signal an end to one's call on (a telephone). [1/3 definitions] |
| help |
used to express trouble; a signal for rescue. [1/8 definitions] |
| indicate |
to signal or serve as a sign, token, or index. [1/3 definitions] |
| interference |
static that makes a radio or TV signal not clear. [1/4 definitions] |
| keypad |
a small panel with keys or buttons. Keypads are used to send a signal to an electronic device. Computers, telephones, calculators, and remote controls all have keypads. |
| motion |
to signal by a movement of the body. [1/5 definitions] |
| pipe1 |
to make music or give a signal with a pipe. [1/6 definitions] |
| scanner2 |
a device that scans printed material and changes it into an electronic signal that can be read by a computer. |
| scramble |
to mix up a signal or message so that it cannot be understood. [1/8 definitions] |
| sign |
to communicate with a sign or signal. [1/7 definitions] |
| signal |
acting as a signal. [4/7 definitions] |
| stoplight |
a traffic light or signal. |
| taps |
(used with a singular verb) the signal played on a trumpet or drum in the U.S. military forces. Taps are used as a signal for lights to be put out, or at the end of a funeral service. |
| telephone |
a device used to send sound or some other signal over long distances by wire or radio waves. A telephone has a part for speaking into and a part for listening. [1/3 definitions] |