noun
signal
SIHG-nuhl
noun
1
Something transmitted or displayed that conveys information, such as a light, sound, or electrical impulse.
"The ship sent a distress signal by radio."
"Weak phone signal made the call keep dropping."
2
An action or event that indicates something is about to happen, or serves as a cue.
"The whistle was the signal to start the race."
verb
1
To indicate or communicate something using a gesture, sound, or device.
"He signaled a left turn before pulling out."
"The change in tone signaled that she was getting angry."
adj
1
Remarkably notable or important.
"It was a signal achievement for such a young scientist."
How to Use Signal
Learner’s notesIn plain EnglishInformation sent through a channel (light, sound, radio waves), or, as a verb, to indicate something is happening.
Common pairings
send a signal
signal a turn
weak signal
signal boost
Word Forms
signaled past tense, signalled past tense, signals plural, signals singular
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The ship sent a distress _____ by radio.
Etymology
From Old French segnal and Late Latin signalis, from Latin signum ("sign").