英和和英

in a signal manner

as a signal

receive a signal

an emergency signal

signal to wake up

a signal man

pick up signals

pick up a signal

communicate by [through, with] signs

by signal

in Morse code

signals communicated through gestures

a signal to get up in the morning

a warning-signal

a flashing-light signal

You must cross at the light.

a fog-signal

That traffic light is flashing.

a signal using handflags

a signal for attracting attention

send signals by or as if by semaphore

the signal to proceed with caution

to heliograph （a message）

signal to turn the lights out

in code

the signal to stop

wait for the light to change

a go‐ahead signal

jump the light

be a signal for or a symptom of